Thermal Winter 20&ndash;30 mmHg Graduated Sport Compression Socks for Men & Women HIGH PERFORMANCE GRADUATED COMPRESSION  Advanced compression knee-high thermal socks promote better circulation and blood flow to reduce lactic acid build up and reduce muscle recovery times. DESIGNED FOR OUTDOOR ATHLETICS  Socks are ideal for hiking, skiing, snowboarding, winter sports, hockey. Keeps heat insulated in cold weather activities. GRADUATED CALF & ANKLE SUPPORT - 20 - 30 mmHG compression is ideal for those with plantar fasciitis, achilles tendon issues, or heel or metatarsal pain. Snug fit, with full range of motion for feet, ankles, and leg. KNEE HIGH LENGTH - Full coverage for calves and shin to better insulate heat. Sock stays in place throughout the day and does not slide down leg. Comfortable sweat-wicking fabric is lightweight, and keeps you dry. 100% SATISFACTION GUARANTEED - Discover everything you need in our compression shorts, backed by a money-back guarantee and our promise to deliver on our customer's expectations! You can feel safe buying CompressionZ fitness apparel from a trusted brand...just just check out the thousands of 5 star reviews we have received from happy customers!