Perfect for muggy days, the Bug Shield Long-Sleeve Shirt protects you from insects, harmful UV rays, and uncomfortable sweat using some of Columbia's greatest technology. Insect Blocker fabric repels bugs for up to 70 washes, while Omni-Wick moisture management technology wicks sweat away from the body for quick, advanced evaporation. UPF 50 Omni-Shade. Other features include roll-up sleeves, vents, sun-protection collar, and mesh pocket bags of 57% recycled polyester, 43% polyester. 100% nylon. Imported.