Item Weight | 0.04 Pounds |
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Number of Pieces | 8 |
Type of Guarantee | 3 years |
Batteries Required | No |

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Invisible Ring Size Adjuster for Loose Rings Ring Adjuster Fit Any Rings, Assorted Sizes of Ring Sizer (8 PCS)
Purchase options and add-ons
- VIRTUALLY INVISIBLE RING SIZE ADJUSTER FOR LOOSE RINGS - High-quality Transparent TPU Material and Unique Design, Virtually Invisible when on rings.
- REDUCE RING SIZE - 8 Sizes in One Pack, Reduce Ring Size 0.5-1 Size, Perfect Fit for loose rings, Prevent the ring sliding off your finger, Saving your valuable rings.
- SOFT TPU MATERIAL - Non-toxic, Safe to use on skin, Soft and Comfortable to wear, No Pain and No Irritation to your fingers, odorless and environmentally friendly.
- FITS ALMOST ANY SIZE RINGS - Fits Ring Width from 1mm to 10mm, Suitable for both Women’s Rings and Men’s Rings(even Wide Men’s Rings). Works with Big Knuckles as well.
- EASY TO USE - Stay Well on rings and Feel Nothing on your ring and finger when used. Depend on your needs to Cut and fit your rings.
Additional details


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Product information
Technical Details
Additional Information
ASIN | B07C15P2F7 |
---|---|
Customer Reviews |
3.9 out of 5 stars |
鶹 Rank |
|
Date First Available | April 15 2018 |
Manufacturer | Freeman Direct |
Place of Business | Shenzhen He Yang Technology Co.,Ltd |
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Product Description

Feramox Invisible Ring Size Adjuster Set, The Best you are looking for!
Feramox ring size adjuster is the best invisible ring size adjuster. Its unique design makes it virtually invisible when on rings and easy to use. It is made of Soft TPU Material, very comfortable to wear, no harm to your skin. Totally 8 different sizes, perfect fit to your rings, perfect for both women’s and men’s rings(even wide men’s rings).


8 Sizes to Fit 1-10MM Width Rings, Fit Both Mens and Womens Rings!
- XXS - Fit 1-1.5 mm width rings
- XS - Fit 1.5-2.5 mm width rings
- S - Fit 2.5-3.5 mm width rings
- M - Fit 3.5-4 mm width rings
- L - Fit 4-5 mm width rings
- XL - Fit 5-7 mm width rings
- XXL - Fit 7-8 mm width rings
- XXXL - Fit 8-10 mm width rings

Soft & Flexible TPU, Comfortable to Wear!
- Made of Soft & Flexible TPU, safe to use on skin and non-toxic.
- Soft and Comfortable when on your finger, no pain and no irritation.
- Clip-on Design, stay very well on rings and feel nothing on your ring and finger when used.

Instruction
1. Choose the suitable size that is slightly bigger than your ring width.

Instruction
2. Clip the ring size adjuster on your ring band.

Instruction
3. Put your ring onto your finger with the ring size adjuster.

Instruction
4. Perfectly reduce ring size and can’t be seen.

STEP 1

STEP 2

STEP 3

STEP 4
Package Includes:
8 X Ring Size Adjusters in 8 different sizes
1 X Instruction
1 X Silver Polishing Cloth
Compare with similar items
This Item FeramoxInvisible Ring Size Adjuster for Loose Rings Ring Adjuster Fit Any Rings, Assorted Sizes of Ring Sizer (8 PCS) | Recommendations | |||||
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Price | -24%$10.59$10.59 List: $13.99 | -10%$8.99$8.99 Was: $9.99 | $11.98$11.98 | $9.99$9.99 | -10%$9.92$9.92 Was: $10.99 | $11.99$11.99 |
Delivery | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 | Get it by Saturday, Jul 5 |
Customer ratings | ||||||
Sold by | Freeman Direct | YNHIAG | MCKN Direct | AMBERART | Danku | eiito |
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Customer reviews
Customers say
Customers like the adjustability, functionality, and ease of use of the product. They mention it fits perfectly to their size, works well to stabilize their engagement rings, and is easy to put on and take off. Customers also say it's comfortable, smooth against the finger, and discreet. However, some customers have issues with bulkiness, adhesion, and value.
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Customers are satisfied with the functionality of the product. They mention it works great, fits very well, and is the best solution they've been able to find without resizing. Some say it makes a huge difference and is well-made.
"Works great on my ring!..." Read more
"I like these a lot! They worked exactly as advertised and are pretty much invisible...." Read more
"Great product! Can’t feel the spacer while wearing the ring. Glad to have found a spacer you can’t feel" Read more
"They are good, but the material not soft enough." Read more
Customers like the ease of use of the product. They mention it's easy to put on and take off if necessary. Customers also say it snaps onto the inside of the band, so their finger actually keeps it on. They also say it's attached to the back of their ring and then they're all set to go.
"Works great on my ring! I'm very happy with how easy it was to use, just snapped the little clear plastic sizer on my ring and back in my finger,..." Read more
"These are the best ring adjusters. The clip on soft plastic is easy to install...." Read more
"...Shape requires getting used to on the finger. Instructions are too small to be useful, again especially to the elderly." Read more
"...The material feels soft and very durable and is easy to apply to a ring for a better fit...." Read more
Customers like the comfort of the product. They mention the material feels soft, durable, and easy to apply to a ring. Some say the product gives them the confidence to wear it without concern. They also say it's tolerable, but feels a little bulky.
"These resizers and very comfortable on the finger. The material feels soft and very durable and is easy to apply to a ring for a better fit...." Read more
"...Now for comfort, it is tolerable, but feels a little bulky." Read more
"...I noticed the sizer for a few moments when I put it on but nothing uncomfortable. I quickly got use to it and don't even notice it anymore. Buy it!" Read more
"...It's comfortable and actually, I don't even realize it's on my ring other than my ring doesn't spin around my finger anymore...." Read more
Customers like that the product is discreet. They mention it's pretty invisible to anyone, perfectly unnoticeable, and hidden well. Customers also say it's comfortable and extremely subtle.
"...It's invisible so others don't see it, and it doesn't get caught on say, knitted sweaters...." Read more
"...Transparent and appears sturdy. Will reserve comment at this time on the durability as its use is only recent. Many sizes in the kit...." Read more
"I like these a lot! They worked exactly as advertised and are pretty much invisible...." Read more
"...Fits perfectly to your size as you control amount of glue. Invisible, cannot notice there is a thin clear gel that sizes the ring...." Read more
Customers have mixed opinions about the value of the product. Some mention it's not a bad solution for the price, while others say it's cheaper than getting a ring-sized.
"...If you have no alternative and need to shrink a ring's size, it's a cheap and effective fix...." Read more
"...Concept I'd great on paper but not practical is everyday use...." Read more
"...This would make a great gift. Saves you money as well from getting sized from the store." Read more
"...them resized but this product works great, I'm satisfied and saved a lot of money." Read more
Customers are dissatisfied with the bulkiness of the product. They mention it's too thick, the material is too heavy, and the plastic adjuster isn't very thick. Some say the thickest piece is not enough to hold their ring on. They also say the product is barely able to reduce the size of a ring by one full size.
"...I'm sure partners will notice the bulky extra pcs when holding your hand...." Read more
"...Now for comfort, it is tolerable, but feels a little bulky." Read more
"...They are so small, they are very easy to lose and since you only get one of each size... But overall happy with the purchase." Read more
"...The pieces are so thick that once on a ring, that ring wouldn’t and couldn’t go past my (non arthritic) knuckle...." Read more
Reviews with images

Great concept on paper.
Top reviews from Canada
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- Reviewed in Canada on March 14, 2025Verified PurchaseThese are amazing! I was a little worried but went with the reviews and they were right. I have 2 rings that needed sizing that I wanted to wear on 1 finger. I put the 2 rings in one of the wider pieces and they hold great and now fit without sliding up and down my finger. You also can not see the plastic at all. Definitely would recommend!
- Reviewed in Canada on June 19, 2025Verified PurchaseMy rings still slip and slide around in this and the tighter option is too small …it gets dirty too. It’s still useful but keep this in mind.
- Reviewed in Canada on April 20, 2025Verified PurchaseWorks great on my ring! I'm very happy with how easy it was to use, just snapped the little clear plastic sizer on my ring and back in my finger, no more risk of it sliding off.
- Reviewed in Canada on August 23, 2023Verified PurchaseThe slide on type fall off while your wearing them and I'm not that rough with my hands! I've had to hunt these little Plastic clips down a few times now... for my pets sake.
They are hard but slightly bendy and do slide back and forth around your ring so there's that Issue!
Possibly a little more silicone might help them keep their grip a little better. I would have returned but they do help keep 1 of my 3 rings, that they are on, from spinning around my finger backwards... mostly the wide banded 1.
The picture shows the 2nd type I bought... the little consecutive circle type. Concept I'd great on paper but not practical is everyday use. Our rings are loose at the thinnest part of our finger, thinner than our knuckles so.... you must put your ring on first then Try to twist these long lengths around until you feel your ring tighter and won't spin around anymore, hopefully.
If you're right handed addingbthem to your tight hand is a little more difficult to twist on then the cut. After you cut it there are edges that keep unraveling or poking your hand. I'm sure partners will notice the bulky extra pcs when holding your hand.
Not to mention you can take your rings off very easy as you have just tightened them so they aren't loose to spin they no longer go over your knuckle.
Lastly adding hand lotion will allow some to get trapped in these circles... making it look dirty. Also after doing dishes they Def change colour to a brownish tinge. See my pic after dished then hand lotion after about 1week or so wear.
The slide on type fall off while your wearing them and I'm not that rough with my hands! I've had to hunt these little Plastic clips down a few times now... for my pets sake.
They are hard but slightly bendy and do slide back and forth around your ring so there's that Issue!
Possibly a little more silicone might help them keep their grip a little better. I would have returned but they do help keep 1 of my 3 rings, that they are on, from spinning around my finger backwards... mostly the wide banded 1.
The picture shows the 2nd type I bought... the little consecutive circle type. Concept I'd great on paper but not practical is everyday use. Our rings are loose at the thinnest part of our finger, thinner than our knuckles so.... you must put your ring on first then Try to twist these long lengths around until you feel your ring tighter and won't spin around anymore, hopefully.
If you're right handed addingbthem to your tight hand is a little more difficult to twist on then the cut. After you cut it there are edges that keep unraveling or poking your hand. I'm sure partners will notice the bulky extra pcs when holding your hand.
Not to mention you can take your rings off very easy as you have just tightened them so they aren't loose to spin they no longer go over your knuckle.
Lastly adding hand lotion will allow some to get trapped in these circles... making it look dirty. Also after doing dishes they Def change colour to a brownish tinge. See my pic after dished then hand lotion after about 1week or so wear.
Images in this review
- Reviewed in Canada on June 8, 2025Verified PurchaseI can't get a single one to feel comfortable enough to wear with a ring so I don't use them. Waste of money as far as I can tell.
- Reviewed in Canada on August 26, 2019Verified PurchaseSo I have problems with my fingers shrinking whenever they get cold, not to mention that I have skinny fingers and slightly larger knuckles; regularly the base of my finger and my knuckle size is a quarter-to half size difference (normally) making it hard to get sizing right. When the fingers get cold it can be a half size to a whole size.
Putting beads in the bottom is expensive and resizing rings all the time damages the crap out of them. I've tried the little noodle resizers and you can feel them and they get caught on things sometimes. The little adhesive ones are total crap, don't buy them, waste of money and they don't stick. Bought these and they are perfect. Come in an arrangement of sizes so you can choose one that fits your band width. I just put my ring on and anytime my fingers are cold, I loose weight, or the ring fits a little looser than others, or its top heavy I slip one of these on under it and I'm good to go. It feels funny for the first two minutes and then you don't feel it anymore. Holds top heavy rings up so they don't slide to the side, and reduces the overall ring size. It's invisible so others don't see it, and it doesn't get caught on say, knitted sweaters. Wouldn't recommend cutting them to size, it is a harder plastic, probably wont cut easy and might give a slightly sharper edge rather than the tapered one it comes with. seriously a great product, wish I bought it years ago instead of last week, would have saved a bunch of money.
(This should go without saying though, if you need the ring resized, get it resized, don't rely on this to keep a size 7 ring on a size 5 finger, its not going to work.)
- Reviewed in Canada on July 2, 2024Verified PurchaseOrdered these as my engagement ring, even after having it reduced to the smallest size still keeps slipping round my finger. This is due to having enlarged knuckles from arthritis, but very thin fingers either side of the knuckle. I had other ones similar to these and they worked but they had small sharp points that constantly caught in clothing towels ect. These ring sizers fit my ring snuggly and don’t catch on anything. My ring still slips slightly but nowhere near as bad as without them. I might add that I never take any of my good rings off due to my arthritis, and the ring sizers stay put through showering and hand washing. Very happy with them.
- Reviewed in Canada on June 27, 2025Verified PurchaseEasy comfortable and not noticeable…agreably surprised
Top reviews from other countries
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ASBReviewed in France on January 3, 2024
5.0 out of 5 stars Reducteur
Verified PurchaseAprès avoir essayer plusieurs, je confirme que ces réducteurs sont parfaits. Ils se clipsent et s'ajustent à votre anneau. Assez discrets par rapport aux autres
Je recommande même pour ceux qui ont des petits doigts
- Sally GReviewed in the United Kingdom on June 3, 2025
5.0 out of 5 stars Ring sizer
Verified PurchaseBrilliant little product. Did exactly what I needed it to do, different sizes in the packet, so can use on different ring. Desin is good so you don’t even know you are wearing it. Happy purchase 🙂
- TravelingFoolReviewed in the United States on March 11, 2019
5.0 out of 5 stars Nice product. This review compares two different products.
Verified PurchaseThis is a review and comparison of two different products:
Feramox Invisible Ring Size Adjuster, assorted sizes (this product), and the Vancool (18pcs) Ring Size Adjuster (1.5mm/2mm/3mm) (https://amazon.com/gp/product/B073J4X9DH).
I have several rings that were a little too loose and kept spinning around on my finger. I didn’t want to have them resized, because then they’d be too tight to go over my knuckle, so I decided to try some ring sizer products to see how well they worked.
Bottom line: Overall I prefer the Feramox insert-type adjusters to the Vancool coil-type adjusters because of the look and comfort, but it all depends on your preference. Either type can be put in place after the ring is on your finger, so you don’t have to worry about getting the ring over your knuckle. The biggest drawbacks to the Feramox ones are that they may fall off and get lost if you don’t use the adhesive (and maybe even if you do), and you may only be able to use one size out of the package for a particular ring. The coil-type has the advantage of allowing you to adjust the ring size a little better by using thicker or thinner coils, and they won’t fall off.
Detailed comparison:
The Feramox adjusters, which were sold by “Freeman Direct”, come in a package of 8 in various sizes, to fit band widths from 1mm to 10mm. (They also sell packages for wider widths, so be careful what you order. If you are looking for sizers for thin rings like solitaires, this is the one you need.) Also included in the package are a silver polishing cloth and a sheet of adhesive. Unfortunately, the product information sheet comes attached to the adhesive sheet, so I didn’t realize what it was at first. There was a blue-green card that had the Feramox product information on one side, and a yellow backing on the other. The yellow backing was actually the backing for the adhesive tape sheet. I had to peel the Feramox card off it, which revealed the instructions for using the tape on the other side. The tape has a transparent film on one side, and the yellow paper sheet on the other. When you pull them apart, be sure to peel the Feramox card off, leaving the transparent film attached to the yellow sheet. Do not peel off the yellow sheet. If you choose to use the adhesive, cut a sliver of the tape to fit inside the groove in the ring adjuster. Peel off the yellow paper and attach the adhesive to the adjuster, then peel off the transparent film. I will probably not use the tape, because with the sizer stuck onto the band, I probably wouldn’t be able to fit the ring over my knuckle. Instead, I’m going to try wearing it by just slipping the sizer in place after the ring is on my finger. I’ll have to be careful not to lose it when removing the rings, but I think it will probably work out better for me, and none of the rings I’ll use it with will get daily wear.
I found one sizer that perfectly snapped onto a 5.7mm gold band. The smallest sizer snapped onto a ring that was 2.16mm wide and stayed on. For the rings that are 1.25mm and 1.83mm, the smallest sizer wouldn’t stay on the ring by itself, but it seems to work okay on them if I slide them on once the ring is on my finger.
Once in place, they’re virtually unnoticeable. The sizer is barely visible when looking at the palm side of my hand, and I don’t feel anything unusual except that the ring just feels a little thicker. It works great to keep the stone on the top of my finger where it should be, instead of sliding around.
Unfortunately, you have to purchase a package of 8 different sizes, when you might only need one or two of the sizes. I wish they had packages of just one particular size, then I wouldn’t worry about losing one. On the other hand, I was able to use 3 of the sizes in this package, and since I’m not going to use the tape to stick them on the rings, I can move the smallest one between the rings that need it. You can use a sizer that’s a little wider than the band, so the two smallest sizes both worked for 3 different ring sizes.
One other thing to note: When trying to get the rings on/off my finger with the insert in place, I found it a little more difficult than when using the coil type. Maybe it’s because the coil rolls around the ring, and helps the ring sort of roll over your finger. So if you do tape the insert in place, that might be an issue.
Vancool Adjusters: This product was sold by “Nest My Life”. It comes with 18 adjusters (6 each of 1.5mm, 2mm, and 3mm coils, and also includes a polishing cloth. The adjusters are easy to use, just coil the desired size around the ring and cut it to desired length. I looked at a lot of similar products, but purchased this one because it included the smallest coils (down to 1.5mm). Most other packages did not come in a size less than 3mm. On a thin ring, the smaller coils look much better.
The advantages of the coil adjusters are that you can use whichever thickness provides the best adjustment, and you don’t have to worry about them falling off the ring. You get so many of them, and only need a small piece for each ring, that it’s not a big deal if you need to replace them. Since the coils wrap around the ring, you don’t have to worry about them falling off. I also found that rings with the coil adjuster were easier to slide over my knuckle than rings with the insert adjuster, because the coils rolled and helped the ring move. But if you do have a problem getting the ring over your knuckle, it’s possible to put the coil on while the ring is on your finger.
The downside is that they’re much more visible than the inserts, and are a little less comfortable. They also seem to slide around on the ring, which wasn’t a problem with the inserts.
TravelingFoolNice product. This review compares two different products.
Reviewed in the United States on March 11, 2019
Feramox Invisible Ring Size Adjuster, assorted sizes (this product), and the Vancool (18pcs) Ring Size Adjuster (1.5mm/2mm/3mm) (https://amazon.com/gp/product/B073J4X9DH).
I have several rings that were a little too loose and kept spinning around on my finger. I didn’t want to have them resized, because then they’d be too tight to go over my knuckle, so I decided to try some ring sizer products to see how well they worked.
Bottom line: Overall I prefer the Feramox insert-type adjusters to the Vancool coil-type adjusters because of the look and comfort, but it all depends on your preference. Either type can be put in place after the ring is on your finger, so you don’t have to worry about getting the ring over your knuckle. The biggest drawbacks to the Feramox ones are that they may fall off and get lost if you don’t use the adhesive (and maybe even if you do), and you may only be able to use one size out of the package for a particular ring. The coil-type has the advantage of allowing you to adjust the ring size a little better by using thicker or thinner coils, and they won’t fall off.
Detailed comparison:
The Feramox adjusters, which were sold by “Freeman Direct”, come in a package of 8 in various sizes, to fit band widths from 1mm to 10mm. (They also sell packages for wider widths, so be careful what you order. If you are looking for sizers for thin rings like solitaires, this is the one you need.) Also included in the package are a silver polishing cloth and a sheet of adhesive. Unfortunately, the product information sheet comes attached to the adhesive sheet, so I didn’t realize what it was at first. There was a blue-green card that had the Feramox product information on one side, and a yellow backing on the other. The yellow backing was actually the backing for the adhesive tape sheet. I had to peel the Feramox card off it, which revealed the instructions for using the tape on the other side. The tape has a transparent film on one side, and the yellow paper sheet on the other. When you pull them apart, be sure to peel the Feramox card off, leaving the transparent film attached to the yellow sheet. Do not peel off the yellow sheet. If you choose to use the adhesive, cut a sliver of the tape to fit inside the groove in the ring adjuster. Peel off the yellow paper and attach the adhesive to the adjuster, then peel off the transparent film. I will probably not use the tape, because with the sizer stuck onto the band, I probably wouldn’t be able to fit the ring over my knuckle. Instead, I’m going to try wearing it by just slipping the sizer in place after the ring is on my finger. I’ll have to be careful not to lose it when removing the rings, but I think it will probably work out better for me, and none of the rings I’ll use it with will get daily wear.
I found one sizer that perfectly snapped onto a 5.7mm gold band. The smallest sizer snapped onto a ring that was 2.16mm wide and stayed on. For the rings that are 1.25mm and 1.83mm, the smallest sizer wouldn’t stay on the ring by itself, but it seems to work okay on them if I slide them on once the ring is on my finger.
Once in place, they’re virtually unnoticeable. The sizer is barely visible when looking at the palm side of my hand, and I don’t feel anything unusual except that the ring just feels a little thicker. It works great to keep the stone on the top of my finger where it should be, instead of sliding around.
Unfortunately, you have to purchase a package of 8 different sizes, when you might only need one or two of the sizes. I wish they had packages of just one particular size, then I wouldn’t worry about losing one. On the other hand, I was able to use 3 of the sizes in this package, and since I’m not going to use the tape to stick them on the rings, I can move the smallest one between the rings that need it. You can use a sizer that’s a little wider than the band, so the two smallest sizes both worked for 3 different ring sizes.
One other thing to note: When trying to get the rings on/off my finger with the insert in place, I found it a little more difficult than when using the coil type. Maybe it’s because the coil rolls around the ring, and helps the ring sort of roll over your finger. So if you do tape the insert in place, that might be an issue.
Vancool Adjusters: This product was sold by “Nest My Life”. It comes with 18 adjusters (6 each of 1.5mm, 2mm, and 3mm coils, and also includes a polishing cloth. The adjusters are easy to use, just coil the desired size around the ring and cut it to desired length. I looked at a lot of similar products, but purchased this one because it included the smallest coils (down to 1.5mm). Most other packages did not come in a size less than 3mm. On a thin ring, the smaller coils look much better.
The advantages of the coil adjusters are that you can use whichever thickness provides the best adjustment, and you don’t have to worry about them falling off the ring. You get so many of them, and only need a small piece for each ring, that it’s not a big deal if you need to replace them. Since the coils wrap around the ring, you don’t have to worry about them falling off. I also found that rings with the coil adjuster were easier to slide over my knuckle than rings with the insert adjuster, because the coils rolled and helped the ring move. But if you do have a problem getting the ring over your knuckle, it’s possible to put the coil on while the ring is on your finger.
The downside is that they’re much more visible than the inserts, and are a little less comfortable. They also seem to slide around on the ring, which wasn’t a problem with the inserts.
Images in this review
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Ricardo RinconReviewed in Mexico on August 7, 2024
5.0 out of 5 stars Excelente producto
Verified PurchaseExcelente producto, cumple perfectamente su función y la relación calidad-precio lo vale. Además llegó antes de tiempo. Estoy muy satisfecho con la compra y lo recomiendo.