SCARPA CruxScarpaCruxSpecsSole Construction proprietary construction Upper Synthetic leather Membrane No membrane Lining Synthetic fabric Men's Sizes Start 39 Men's Sizes End 48Women's Sizes Start 36Women's Sizes End 43Men's Weight 1 lb, 11.2 ozWomen's Weight 1 lb, 8.2 ozMoreExisting modelAn ideal shoe for comfort on the trail, the approach and on moderate climbs.