From Marmot, these pants feature: Lightweight 40-gram Primaloft® insulation that provides all the coziness you want Two-layer GORE shell protects you from winter weather or wet chair seats GORE-TEX® that’s guaranteed to keep you dry Seam-taped for complete leakproof protection Environmentally conscious PFC-Free DWR for premium water repellency to keep you dry RECCO® Avalanche Rescue Reflector  PrimaLoft® Black Insulation ECO is lightweight and breathable, offering warmth and wind resistance Cordura Scuff Guards for durability External leg vents that dump heat Adjustable waist with snap closure and zippered fly Internal gaiters with gripper elastic that keeps snow out Water-resistant handwarmer pockets keep things dry Articulated knees for full range of motion GORE-TEX® post-consumer recycled polyester plain weave and pre-consumer recycled nylon plain-weave fabric Machine wash/tumble dry Imported.