From Marmot, these pants features:  The lightweight 40 gram Prima loft insulation provides all the coziness you want while 2-layer GORE shell protects you from winter weather or wet chair seats GORE-TEX Guaranteed to Keep You Dry., 100% seam-taped for complete leakproof protection Environmentally conscious PFC-Free DWR for premium water repellency to keep you dry RECCO Avalanche Rescue Reflector Prima Loft Black Insulation ECO is lightweight and breathable offering warmth and wind resistance Corduroy Scuff Guards for durability External leg vents to dump heat Adjustable waist with snap closure and zippered fly Internal gaiters with gripper elastic keeps snow out Water-resistant handwarmer pockets keep things dry Articulated knees for full range of motion Post-consumer recycled polyester plain weave Pre-consumer recycled nylon plain weave Machine wash/tumble dry low Imported.