Adult's Knee Support Brace 1 Pairs Bamboo Charcoal Fiber Elastic Compression Running Short Socks (L size/16.5"-18.8") Material: Bamboo charcoal Fiber,Cotton,Spandex Function: Strong adsorption capacity ,Regenerative warm,Adjust the humidity balance Applicable to the daily warm, rheumatism, cold hands and feet, muscle aches and sports Package: 1 pairs (2pcs) Charcoal kneepad 3 SIZE knee circumference : S size/ 11.8"-14.1"/ M size/ 14.1"-16.5"/ L size/ 16.5"-18.8"