Designed by an orthopedic surgeon, to help increase circulation in your hands and wrists by providing mild compression and warmth. Wear day or night to reduce pain, control swelling and promote healing. Active Gloves feature an anti-slip design on the fingers and palm for a sure grip. Breathable blend of 92% Cotton/8% Spandex. Machine wash. Specify size: Measure length across knuckles. SM (up to 3 ⅛"), MD (3 ⅛"-3½") or LG (3½"-4"). If borderline, order down.