CW-X Conditioning Wear Men's Ventilator Web Top Polyester 90%/Spandex 10% Imported UPF 50+ for UVA/UVB protection Quick dry moisture movement and evaporation through 3-layer capillary action for next to skin comfort LiteStretch 4-way stretch fabric on sides Anti-bacterial fiber for freshness Versatile performance for both outer wear and as a base layer