Compression Arm Sleeve ·70% Nylon, 30% Elastane ·Quick drying and breathable ·Thin and leight weight to maximise heat emission ·Graduated compression 15-20 mmHg ·Increases circulation and reduces lactic acid build-up and muscle fatigue during exercise and running ·High density construction prevents stiffness, cramp and micro muscle injuries ·Shaped to fit design, supporting bodys natural angles, seamless 360˚ knit ·Comfortable to wear even under normal clothing ·Easy pull on and off ·Sold as pair of 2 (buy 1 piece = get 1 pair).