Aqua-x. Anti-odor and anti-itch material - wicks moisture away from the skin. Flat lock stitch reduce chafing and rashes.Aquax unisex arm sleeves 99% UV protection spf 50 cover cooler for bike cycling/ hiking/ golf (1 pair).Unisex and free size andhigh elasticity, does not creep down from your upper arm, fit very well, no pressure or discomfort in any activity.Better wear experience and protection: in summer, definitely feel cool when these sleeves on, but in winter, it can make your arm warmer too, yes, it is so amazing.99.8% UV protection, got no sunburn or bug bites. Not easy to cause bacteria, fast sweat kick-away and fast dry, make your skin fresh all day. By considering all muscle line of body to protect muscle. Gives faster muscle recovery and blood circulation. Make your muscle feel cozy when doing sport.