The Aggressor Vented Sock takes KLIM’s popular lightweight vented sock and incorporates an all-new technical and performance design to keep you comfortable in warmer weather. The highly-breathable, moisture-wicking above-calf design includes knit mesh panels with comfort padding at ankle, heel, forefoot and sole. Added quick-drying performance nylon materials dry eight times faster than cotton and are twice as soft.WOMEN RIDERS ORDER 1-2 SIZES DOWN, CHECK SIZE CHART FOR SPECIFIC MEASUREMENTSFULL SPECS Blended w/ acrylic, Polyamide Nylon, Lycra for durability & comfort (69% Polyamide, 29% Tactel, 2% Lycra) Dries 8x faster than cotton Made of European sourced yarns Engineered Terry Loop for strategic cushioning & reinforcement Arch & ankle support stretch bands Knit mesh panels for breathability Patterned front mid ankle bend for reduced bulk Tubular cuff for better fit & stretch recovery Over-the-calf height for boots Men's sizes: SM = 4-6, MD = 7-9, LG = 10-12, XL = 13-15 Women's sizes = men's + 2