The perfect, all-around, next generation mountaineering boot for difficult alpine terrain and mixed routes. Suitable for everything from alpine climbing and via ferratas to classic mountain expeditions. Durability and a light weight are well balanced with upper flexibility. Uppers are made of durable 2.4 mm suede leather, and the LOWA “FlexFit-3D“ system supports the natural motion of the ankle. Achieve optimal fit with the proprietary Lace Loop technology with freely moving lace hooks at the ankle, all integrated into a two-zone lacing system. The waterproof GORE-TEX® lining provides optimal comfort, whilst the 200 gm Primaloft® insulation keeps feet warm. The proven Vibram® rubber outsole “Dolent” shaves weight and offers the most secure traction and edging.This style is step-in crampon-compatible.