Bamboo Comfort Self-Warming Knee Support – 2 PackKnee supports use compression and heat to help relieve aches and pains and improve circulation while allowing for better mobility.Reduces discomfort from achy joints, fatigue, and sorenessHelps improve circulation, mobility, and flexibilityProvides compression and helps reduce inflammationMay help rejuvenate muscles, cartilage, and jointsMaterial: 43% bamboo charcoal viscose, 32% polyamide fiber, 17% latex elastic, 85 polyurethane fiberMachine wash cold, gentle cycle; low heatSmall: 11.5 inch – 13 inchMedium: 12 inch – 14 inchLarge: 14 inch – 16 inchCorrect sizing can be found by measuring the circumference of thigh 4 inch above the knee cap.