Upper: Lace cover for extra winter protection, closed with a zipper. Upper: Climaproof membrane for waterproof protection in wet conditions. Upper: Primaloft insulation material for more warmth, even in wet conditions. Outsole: Traxion-featuring Continental rubber for extraordinary grip. Primaloft Gold Weight: 200 gram. Weight: 25 oz / 704 gram. Material: Textile / Synthetic.