Thumb hole design, protect your palm for sunburn, would not feel stuffy. Micro pressure stripe design dissipates force for wrist, make your arms look more slender. During summer workout or outdoor activity, it cools down your body temperature especially your arm. Sun Block Effect and Protect Skin from UV. Because of the air permeability, it does not stress out your skin Therefore, this arm cover is the best functional item for your workout. Breathable, fast dry, very absorbent of sweat, wick moisture away from the skin, make your skin feel fresh all day. Say goodbye to heat rash, erythema, black spots, and so on. Enjoy a healthier lifestyle. Unique Design, Comprehensive Protection Non-slip pads on the fingers prevent slipping If you are uncomfortable with exercising or working after wearing the arm sleeve, you will be relieved of the inconvenience with a tightly embedded silicone pad. ? INSTRUCTION Do not use bleach or fabric softener. Wash your hands with warm water and neutral detergent. Please dry in the shade.One pair per package. length - 19 inches / Wrist- 7~ 9 inches / Bicep- 9~ 14 inches. While doing outdoor activities or working in a windy or hot weather, wearing arm warmers will be a good choice to keep your arms from wind and UV. An essential gear for cycling, building, gardening, golfing, basketball, tennis, fishing, triathlon training, jogging, driving the car, and more. It cuts off the ultraviolet rays to the back of the hand, and there is a hole where the thumb comes off, and the finger can move freely. Required items for sports leisure activities Anti-slip cool arm sleeve.