Heat 3 Smart Gloves (Black) Medium Size 9 (8.25"-8.75") Designed for European Special Forces for warmth, grip and dexterity Waterproof and breathable elastic microfiber shell, goat leather and Primaloft construction Space for heat packs on both sides of fingers and wrist Conductive finger and thumb for touch screen operation Men's M measures 8.27 - 8.66 inches around knuckle circumference