The warmest KLIM balaclava is redesigned with comfort and functionality improvements across the board. Fleece-backed GORE-TEX Infinium™ with Windstopper® panels cover the face, neck and front chest area for protection in the coldest conditions. The shoulders, back and sides of the head are 4-way stretch wind-resistant material for added protection and comfort. Redesigned seam placement and stretch panels also increase comfort.