The Salewa Men's Mountain Trainer Mid GTX has a resistant suede upper, climbing rubber rand, extended lacing and sticky Vibram Alpine Approach sole. The Mountain Trainer is the perfect every day companion on and off the mountain. The GORE-TEX membrane provides ultimate waterproofness. Features Resistant suede upper Climbing rubber rand Extended lacing Sticky Vibram Alpine Approach sole Gore-Tex membrane lining Weight: 640g Glossary 3F System EVO:Limiting the freedom of movement of an athletes foot is the biggest mistake that can be made. This system offers freedom of movement where the mountaineer needs it and also provides support when needed.Climbing Lacing:More accurate lacing in the toe area gives more support and performance.MMF Multi-Fit FootbedA three-dimensional body, defined by length, width and height. Salewa offers a footbed that allows an individual adjustment of the fit.Silverized 100% Fresh:Reduces bacteria, treating the shoes with silver ions destroys enzymes within the bacteria that are necessary for them to live. The bacteria die off without these enzymes.Vibram:Vibram create high quality rubber compounds that provide excellent grip in wet and dry conditions. Vibram also develop lug patterns that provide stability in all conditions without compromising the flex of your foot.