Bamboo compression support sleeve for tennis elbow recovery Bamboo fibres provide comfort and are non-irritable and don't crease when worn Helps to support and protect the joint and surrounding soft tissue during activity and exercise Unique composition and intricate weaving techniques provide comfortable yet highly effective compression Yarn features a cross section filled with micro gaps for breathability and sweat build-up elimination Bamboo charcoal supports have been proven to be up to 40% more effective than ordinary supports at improving the blood flow. Increased blood flow improves performance and reduces recovery and rehabilitation times by transporting oxygenated blood to the supported area. 62% nylon, 23% bamboo, 15% spandex Size Guide (elbow circumference): S - 200-230mm M - 230-260mm L - 260-290mm XL - 290-320mm