Oiled Waterproof Nubuck Leather + Abrasion-Resistant Ripstop Textile; 200g Freeze Guard insulation, B-DRY Waterproof Membrane, 100% RPET Webbing + YKK Water-Resistant Medial Zipper Board-Lasted O-FIT Insole w/ Bloom Algae Single-density compression molded EVA, TPU heel clip Vibram XS-Trek Arctic Grip Canmore From the inside out—200g of Freeze Guard insulation and B-DRY waterproofing—the Sphinx Pull-On is ready for ice-laden mountain towns. Featuring waterproof oiled nubuck, a water-resistant medial zipper, recycled components, and a Vibram Arctic Grip A.T. sole made of Vibram XS Trek.