BLACKHAWK! Men's HPFU V.2 Combat Shirt with I.T.S. cotton Shell 1: 70% cotton, 30% nylon ripstop. Shell 2: body 8% cotton 47% modacrylic, 5% spandex. Lining: Polyester Tricot Mesh. Two tourniquets built into upper arms (one per sleeve) Zippered mock neck allows added ventilation Indonesia