N-rit White Small TUBE 9 Coolet 2 Cooling Arm Sleeve w/UV Protection & Cool-X Technology - UPF 50 +! 77% Nylon 13% Polyester 10% Spandex cool-x Technology Keeps The Arm Cool And Dry Quickly protects Your Arm From Harmful UV Rays (UPF 50+) actively Supports Your Muscles very Soft And Lightweight brand: n-rit