For trustworthy performance, targeted warmth and smart features, the new contour fitting Tamarack Gore-Tex 2 Layer pant with premium PrimaLoft GOLD 40G seat and knee insulation is the pant of choice for those who aren't afraid of a little stormy weather. The articulated knees and mesh lined inner leg vents keep you cool and mobile while breaking trail while YKK AquaGuard water resistant zippers and boot gaiters keep the snow out while stomping pillows. Material: Gore-Tex.