Good bang for the buck foam roller. The choice of using two different sizes of bumps is questionable, so far it has not bothered me too much but I do find the smaller bumps to feel better. I would have prefered the same throughout.
Pros: - construction is solid (I have stepped on it completely to massage my feet) - foam feels durable, not some cheap flakey stuff - nice size, might just a tad narrow - choice of colours
Cons: - two sizes of bumps, would prefer just the smaller one throughout - no included instructions, but you can Google it for your specific muscle group