ExOfficio Men's Give-n-Go Sport Mesh Underwear Crew Tee 92% Nylon, 8% Lycra Spandex, 94% Nylon, 6% Lycra Spandex Imported Easy-care so you only need two for any trip Ultralight mesh is breathable and quick drying, keeping you cool Extend the wear of Regular Shirts by layering tee underneath Easy-care so you only need two for any trip