The Pro-Tec Ankle Sleeve features an easy on/off application and provides comfortable support with no bulkiness. Therapeutic warmth keeps ligaments flexible to reduce strain and tearing. The compression helps contain inflammation, while still supporting the ankle. Sizes (Based on Shoe Sizes): Sm.- Men (5-7), Women (6-7.5) Med.-Men (7-10), Women (7.5-10) Lrg-Men (10-12), Women (10-13) X-Lrg-Men (12 - 13), Women (13+) XX-Lrg-Men(14+) Note: Larger ankles, order one size up.