Support your leg with this warming Self-Heating Knee Support Brace Pull on this handy supportive brace when you need some extra support and warmth Made from a self-heating material that warms up from your body-heat Helps to relax tight muscles and can ease up your aches and pains Available in 3 sizes: M, L or XL (please see images for size guide) Materials: polyester and cotton  Save 64% on the Self-Heating Knee Support Brace - now only 7.99 pounds