This arm sleeves can effectively prevent arm injury in activities, high elasticity fabric, soft, comfortable and breathable. These arm sun protection sleeves can protect your arms from UV radiation and arms from muscle strains. It is made of high quality lycra material which is durable and comfortable. There are four sizes about the sleeves which are M, L, XL and XXL. It is suitable for various outdoor activities such as golf, tennis, fishing, baseball, climbing, jigging, cycling, soccer or driving etc. Item Name: Sleeves Material:Lycra Size Details: M Size: Length: 38cm/14.96", Top Circumference: 23cm - 27cm/9.06" - 10.63", Below Circumference: 13cm - 15cm/5.12" - 5.91" (Approx.) L Size: Length: 39cm/15.35", Top Circumference: 25cm - 29cm/9.84" - 11.42", Below Circumference: 15cm - 18cm/5.91" - 7.08" (Approx.) XL Size: Length: 40cm/15.75", Top Circumference: 27cm - 32cm/10.63" - 12.60", Below Circumference: 18cm - 20cm/7.08" - 7.87" (Approx.) XXL Size: Length: 41cm/16.14", Top Circumference: 29cm - 34cm/11.42" - 13.39", Below Circumference: 20cm - 22cm/7.87" - 8.66" (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 Sleeve