87% polyester, 13% elastane heathered wicking knit with Coolcore technology, 92% polyester knitted mesh, 8% elastane wicking knit inserts with Coolcore technology; Coolcore is engineered to distribute moisture quickly throughout the garment. As the moisture spreads it will dry faster and keep you cool and comfortable; Garment protects against the sun with (50+UPF on body, 25+ on mesh inserts); Wicks moisture; Half-zip pullover style and reflective tape; Raglan sleeves for maxium mobility; Tagless label