Tianmei Uv Protection Hand Cover Elasticity Sunscreen Cooling Arm Sleeves for Sports/Driving/Bike/Hiking/Golf About 14.5" long, 2.8" diameter for upper arm, 2" for wrist. UV Protection over 98%. High elasticity-Men & Women both wears possible. Stretchy, Fast Dry materials for excellent cooling effect. Three Dimensional (3D) Weaving Design to make more comfortable than others.