The Montrail Trans Alps OutDry tears up the trails with sure footed precision and cloud nine comfort. Seamless uppers promote natural flex and feel, with welded thermoplastic reinforcement for extra support. The OutDry waterproofbreathable membrane keeps your feet pleasantly dry on moist, mud caked trails, also repelling water through shallow stream crossings. Plus, the external rubberized print prevents trail debris from damaging the shoe. The FluidFoam midsole is stacked a bit higher to save your joints across punishing terrain and range crossing efforts. FluidGuide technology enhances midfoot stability, especially across rough, uneven surfaces regularly encountered on the trail. And because it's optimized for craggy alpine routes and root infested trails, the full length rubber sole grips tenaciously with 6mm lugged traction.