A high performance, lightweight one-piece union suit designed to wear under a dry suit or any time you need to be prepared for a variety of conditions. The K2 Polartec® Power Grid™ Fleece Union Suit is a high-performance, lightweight 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. Features Super stretch neoprene neck for zipperless entry Front fly Breathable Polyester Waffle Grid fleece wicks moisture away High Warmth to Weight Ratio A one-piece suit eliminates cold spots Flatlock seams to prevent chafing Size variations to fit people of most shapes and sizes (S-XXL) Technical Specs Fabric - Stretchy Polartec® Power Grid® Crossdye Heather Jersey with Odor Resistance Fabric Content - 90% Polyester, 10% Spandex Fabric Weight - 119 g/ m² Country of Origin - Vietnam