As part of our Ascent range, it features Stretch Nylon Woven Proflex™ with carefully zoned panels that are designed to cope with the increased abrasion and exposure of technical ascents without critically inflating the weight. A slim, tailored cut with articulated knees provides far better freedom of movement than a traditional waterproof pant. The flat semi-elasticated waistband is comfortable with a harness, a plus a pair of zipped hem gussets enables you to expand the cuff for large mountaineering boots.