As the name implies, the Kayland 8001 has been designed for expedition use and extreme mountaineering above 8000 meters. Features an inner boot combining an aluminum coated outer shell with a Primaloft ®-insulated liner for maximum thermal insulation. Features: Anti-Slip Closure Strap: Allows the user to adjust the volume of the conform to the leg and reduce the chance for catches and trips. Gaiter: Made with water resistant textile. The upper portion includes a layer of neoprene which improves insulation and keeps the heat in. Gaiter/Medial Side: Reinforced with schoeller® and Kevlar® for superior abrasion resistance. Inner Boot: Extremely comfortable and insulated with Primaloft®, the boot features a thin rubber outsole. Specs: Shell: Aluminium coated to ensure maximum thermal insulation Colors: Black Crampons: Automatic Gaiter: Ergonomic lacing + Neoprene + shoeller® + shoeller® Kevlar Inner Boot: Dryver® + Pack Leather + Primaloft® Inner Shell: Neoprene + shoeller® Kevlar + Aluminium Insole: E.C.T. ICE Last: Altitude Rigidity Level: 9 Midsole: Triple Force Midsole Sizes: 6-13 US no half sizes Sole: Vibram® Mulaz Weight: 1580 g