Thermoskin Elbow Support with Straps anatomically shaped to provide extensive coverage and support of the medial and laterial aspect of the elbow. Forearm straps provide additional support during periods of activity. Thermoskin Elbow Support with straps aids in the treatment of tennis and golfer"s elbow. Application: Apply the product so that the vertical seam runs on the inside area of your elbow. Cross seam should be positioned at the point of the elbow. Thermoskin Thermal Supports utilize the exclusive patented Trioxon® lining that is clinically proven to capture your natural body heat. Unlike other products, Trioxon allows your skin to ventilate and remain comfortably dry even with long-term use. Competitive products trap the perspiration resulting in discomfort, slippage, risk of infection and unpleasant odor. The Trioxon lining creates a microclimate to help the skin breathe while still providing effective heat therapy. This is the secret of Thermoskins long-term comfort for the user. You can even wear Thermoskin for extended periods of time without the discomfort you would have with other products. How Thermoskin works: The application of prolonged heat therapy to the effected area is a simple and quick form of treatment. Heat therapy promotes healing by opening up the small blood vessels, increasing blood flow and facilitating the removal of inflammation. Heat therapy assists your bodys natural healing process. The combination of this heat therapy along with the support and light compression provided by Thermoskin Thermal Supports help prevent, treat and rehabilitate soft tissue injuries. Sizing: Measure around elbow with arm extended.X-Small: 7 1/2 - 8 3/4 Small: 9 - 10 1/4 inchesMedium: 10 1/2 - 11 3/4 Large: 12 - 13 3/4XL: 14 - 15 3/4XXL: 16 - 17 3/4