Army Digital Camo Military E.C.W.C.S. Hyvat Trouser-3XL This item is a part of the proprietary hyvat system. The hyvat system protects from wind, water and cold while promoting ventilation through the use of three layers. The inner layer consists is a thin and soft, yet durable layer that contains minute micropores that wick away moisture. The middle layer has regularly configured micropores to increase moisture permeability. The outer layer has smaller pores in the resin surface to allow condensation to escape, but is durable and repels water. Overall this is one of the best systems developed for people who are in the outdoors a lot due to their work or hobbies. All three layers are. Available in a variety of colors and sizes. Contact the seller if you don’t see the size or color you want. We may be able to find it for you. SKU: 9879. Manufactured by Rothco.