A high-performance twist on our original one-piece layering system. This form-fitting union suit helps to regulate body temperature. Zipper-less super-stretch neck neoprene entry eliminates buttons, zippers, and snaps. 4-way stretch polyester grid fleece provides a wide comfort range for exceptional performance in a variety of conditions. Men’s union suits are equipped with a front fly. Super wicking fabric makes the K2 Union Suit dry quickly and 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.