Windproof Retro.The women’s Classic RETRO-X sweatshirt provides windproof protection with a timeless alpine aesthetic, for cool days on the trail. 50% recycled bonded Sherpa fleece makes up the body, keeping you warm. A warp-mesh backer of 50% recycled poly is windproof. Patagonia includes a SUPPLEX nylon stand-up collar for extra neck protection. A vert-zip chest pocket made of nylon is a tough storage option. Two handwarmer pockets are zippered and lined with warm brushed poly-mesh. All the zippers have oversized Grosgrain zipper pulls for easy closure. The chest pocket, outer collar and wind flap are DWR-treated. Bluesign-approved fabric was used for the lining.