For years I have been using this product, often just to sleep or maintain my sanity while living in a noisy apartment, or around a city's many blaring areas. My local drugstore kept running out of them and I was delighted to find them on 鶹 - of course cheaper, and also more reliably available. They are by far the best earplug I've ever used, and I've tried many to escape overwhelming, distracting noise in various work and home situations. They are definitely reusable up to a point. I can't get by without them now, having formed a strong sensitivity towards sound over the years. Thank gosh for Ohropax, they've at times really helped me cope.