The original war one-piece layering system for the coldest conditions. This form-fitting layer keeps you toasty without being restrictive. Zipper-less super-stretch neck neoprene entry eliminates buttons, zippers, and snaps. 4-way stretch polyester stretch fleece is extremely soft. Women’s union suits are equipped with funnel compatible fly and an updated drop zip with relief zipper . This quick-drying base layer keeps you warm even when wet. A perfect base layer for a variety of outdoor pursuits. Skiing, snowboarding, hunting, cold weather camping, ice fishing, snowmobiling, partying, paragliding, the list is endless.