The Scarpa Men's Proton Trail Running Shoe charges up steeps, moves fluidly across ridgelines, and thrives in alpine environments. Its breathable mesh upper uses synthetic leather overlays for long-lasting durability, and there's an exoskeleton heel cage that ensures a stable ride when the trail turns rocky. Underfoot, the Proton features two layers of EVA that balance between cushy comfort and solid support. Vibram's Genesis rubber sole has a multi-traction tread to assure good grip over dirty trails, rocky ridges, or dewy grass.