Compression: Graduated decrease compression 20~30 mmHg Size: S, M, L, XL Features: 1. Comfortable cuff 2. Ankle joint Nice weaving design provides activity 3. Instep protector Reduces the discomfort of frction 4. Toe tip protector Roomy space provides more comfort 5. Calf Interior terry-looped texture to keep warmth and comfort 6. Ankle protector Prevents from sprain and friction 7. Achilles tendon protector Reduces the risk of scraping & bruising 8. Heel protector Against pressure and friction 9. Footbed Specific weaving texture buffers from impact.Ventilation design linked the footbed. Materials: 76% Nylon, 12% COOLMAX, 12% LYCRA Great for: Mountain-Climbing & Skiing