The Mountain Trainer 2 Mid GTX Backpacking Boot brings all of the features we loved from the first generation boot, in a 15% lighter package to solidify this boot in the ultralight backpacking category. The GORE-TEX waterproof lining gives us confidence that our socks will remain dry despite unforecasted rain, creek crossings, and muddy trail conditions, while the suede leather cuts down on weight for lightness underfoot over endless miles.