The La Sportiva Nepal Cube GTX is a warm and technical mountaineering boot that will take you everywhere from big peaks to technical mixed terrain, glacier travel and vertical ice. A carbon tech honeycomb insole provides huge amounts of stiffness and insulation at a very low weight. It's lined with an insulated comfort Gore-Tex® membrane fopr even more warmth and wetherproofing, and the tongue is adjustable and removable. Nepal Cube GTX Mountaineering Boots