The OsFit Compression Foot sleeves are as described on the product description page
https://www.amazon.com/Compression-Osfit-Best-Support-Top-Basketball-Circulation/dp/B01N8ROFGK. If you have ever dealt with any type of foot pain you will understand how a certain amount of constant compression feels good. I have had many issues with my feet. I love putting on a compression sock. I can even wear it around the house with house shoes or as pictured with flip flops. I ordered size small because I really like the tight compression. I am nursing a sore right foot. When I walk on my treadmill it starts to hurt in one area after about 9 minutes. This sleeve helps and I was able to walk 19 minutes without it hurting. These can be hand or machine washed but should be dried flat so as not to loose elasticity from heat. Great for new or old injuries that can be dealt with at home with a little TLC.