NWT - Waterproof/breathable Marmot MemBrain® fabric repels heavy rain and snow for hours, while the 100% taped seams also help keep water out. Moisture-wicking and breathable PrimaLoft® Black Insulation Eco keeps you warm and dry while still staying compressible. Zippered leg vents make it easy to transition in and out of boots while the internal gaiters, articulated knees, and Cordura® scuff guards mean a more comfortable trip up and down the mountain.