Product Details Sizing Guide 10% Polyster Interlock, 156 g/m2, Moisture Wicking (inherent in yarn). UV Protection UPF 40+. Kinetic Insertion of stretch woven banding into key movement zones of the garment. Dry Cell Highly functional materials draw sweat away from the skin for quick evaporation, creating a superior moisture management system to keep you dry during exercise. UPF 40+/50+ UPF 50+ provides the ultimate sun protection rating. Allows 1/50th of the sun's UV radiation to pass through it. UPF 40+ provides the ultimate sun protection rating. Allows 1/40th of the sun's UV radiation to pass through it.