The trollveggen Gore-Tex Pro Bibs are Norrona's most durable pants, developed for mountaineers with high requirements to excessive durability, innovative functionality, and high-performance weather protection. The trollveggen Gore-Tex Pro Bibs are our most durable mountaineering pants and the first choice of alpine adventurers who climb under harsh conditions. Made to offer big mountain perfection, these high-rise bib pants have never rested on their laurels but continuously been perfected to meet the needs of alpine explorers. Engineered to withstand wind, water and abrasion, we’ve used very durable and recycled 70D X160D Gore-Tex fabric. The Vectran reinforcement on the lower leg will reduce wear and tear from crampons, and thanks to the detachable gaiters and zipped lower leg gusset you can easily customize the pants to fit your needs for both summer climbs and lightweight rando boots. We’ve improved the ergonomic leg and seat construction, creating an ergonomic S-shape to improve movement and decrease excess fabric. By moving the seams to the front, we’ve managed to build a joint-like cap function to the knee area increasing both comfort and mobility. The drop seat function does not only facilitate effortless toilet visits, but also provides great ventilation thanks to the two-way zippers. Other key features include a stretchy back, adjustable suspenders, a thigh pocket and front bib pockets which conceals an adjustment cord which can tighten the waistline if needed.