Salomon Men's X Ultra Trek GTX Backpacking Boot 100% Leather and Synthetic Imported Rubber sole Shaft measures approximately 6.5" from arch To make one of the lightest hiking shoes ever, we used lightweight materials and welded seams. This combination reduces weight while maintaining flexibility and comfort on the trail. Aggressive lugs with a reverse chevron pattern help the non-marking Contagrip sole claw into any surface, for confidence on every hike. Mountains almost always give you unexpected weather. Full GORE-TEX bootie ensures comfort in the harshest weather conditions.