Specifications: Efficient anti-collision design to effectively mitigate and disperse the force generated by impacts. The silicone anti-slip strip can effectively prevent the elbow brace from moving down during exercise. Protect your elbow and arm to avoid cramps and injury caused by improper force. Item Name: Sport Arm Sleeve Material: Spandex, Silicone Features: Elastic, Anti-slip, Anti-Collision Size Details: M: Length: 40cm/15.75", Upper Circumference: 25cm - 33cm/9.84" - 12.99", Lower Circumference: 13cm - 21cm/5.12" - 8.27"(Approx.) L: Length: 41cm/16.14", Upper Circumference: 27cm - 35cm/10.63" - 13.78", Lower Circumference: 15cm - 23cm/5.91" - 9.06"(Approx.) XL: Length: 42cm/16.54", Upper Circumference: 29cm - 37cm/11.42" - 14.57", Lower Circumference: 17cm - 25cm/6.69" - 9.84"(Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Sport Arm Sleeve