Puerto Rico Flag Compression Arm Sleeves UV Protection Unisex - Walking - Cycling - Running - Golf - Baseball - Basketball 1 Pair/Set of Certified UPF 50+ Sun Protection (Blocks 99%+ of The Sun's harmful UVA/UVB Rays). Flatlock seams eliminate chafing. Wicks Moisture. Comfortable "zig zag" Non-slip gripper band at the bicep. No fade or lose elasticity.