These elasticated therapeutic copper thermal joint supports provide insulation to the joint for gentle warmth and comfort. For additional benefit they are manufactured with real copper thread, which for centuries has been held to stimulate circulation and ease stiffness and pain. The supports will not restrict movement as the copper is combined in such a way that flexibility is not diminished and can be handwashed at a low temperature so they can be worn again and again. 40% polyester, 35% nylon, 15% elasodiene, 5% copper, 5% viscose. Wrist: 60% viscose, 20% elasodiene, 10% copper, 10% polyester. Each support is available in 2 sizes: M (small or medium) or L (large to extra large). Sizes: Elbow: Medium (D2406-M), Large (D2406-L) Mitten: Medium (D2407-M), Large (D2407-L) Wrist: Medium (D2408-M), Large (D2408-L) Knee: Medium (D2409-M), Large (D2409-L) Ankle: Medium (D2410-M), Large (D2410-L)