Gore-Tex ECWCS ACU Digital Camo Jacket and Pants Set Waterproof Gore-Tex ECWCS Gen II set in ACU digital camouflage. The trousers are size Medium-Short with an inseam of 26.5 to 29.5 inches and a waist of 31 to 35 inches. This set is made of 100% nylon with a Gore-Tex membrane. The jacket has a hood and large front pockets. The pants have an elastic drawstring waist and side zippers on the lower legs for easy removal over boots.