Specifications: High elasticity fabric, soft, comfortable and breathable. With anti-skid silicone strip design, effectively prevent falling off. Protect your arm effectively, reduce the risk of muscle strain during sports. Suitable for cycling, running, basketball, football, etc. Type: Arm Sleeve Crowd: Adult Material: Spandex, Silicone Features: Comfortable, Elastic, Anti-slip, Breathable M Size: Length: 38cm/14.96", Top: 23cm - 27cm/9.06" - 10.63", Bottom: 13cm - 15cm/5.12" - 5.91" (Approx.) L Size: Length: 39cm/15.35", Top: 25cm - 29cm/9.84" - 11.42", Bottom: 15cm - 18cm/7.09" - 7.87" (Approx.) XL Size: Length: 40cm/15.75", Top: 27cm - 32cm/10.63" - 12.60", Bottom: 18cm - 20cm/10.63" - 12.60" (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 Arm Sleeve (Only 1Pc, Not 1Pair)