LP Ceramic Ankle Support is made of 100% cotton inside lining for comfort. It emits far-infrared rays to penetrate deep into the body to activate cells and provide therapeutic heat to improve blood circulation. They enhance cells renewal and provide soothing relief from minor pain associated with nervous system disorders.After applying Ceramic Support for 30 minutes, blood circulation improves and body temperature rises in the covered area.Features:*4 Ways - four-way stretch elastic compression system helps provide excellent comfort and maximal fit.*100% Cotton - cotton fibre provides maixmal comfort and excellent moisture management.*Ceramic yarn - emitted far-infrared rays that penetrate deep into the skin can activate cells, enhance cell renewal, and improve healing ability.Size Guide:Small: 27.9-33cmMedium: 33.7-40cmLarge: 40.6-47cmX-Large: 47.6-54.6cm