Head-to-toe warmth for when the mercury drops, the Coefficient LT One Piece is designed to combine Polartec® Power Grid® fleece with functional features that provide a reliable, one-and-done baselayer. The split back opening and front flap opening make it easy when nature calls, and the 3/4th zip allows you to quickly get in and out of this layer. The under the helmet hood is an added bonus for when you need extra warmth up top, and the flat lock seams are comfortable next to skin.