adidas Running - Tundra Trail (Dark Navy/Slime/Dark Silver) - Men's: A lightweight shoe with a heavy-duty TRAXION(tm) and protective upper overlays and materials for runners out on the trail and the street leading to the trail. Synthetic leather trims improve upper durability. Mesh nylon combines light weight and breathability. EVA insole for comfort. Midsole features adiPRENE® insert for comfort and shock absorption, plus injected EVA for long-term lightweight cushioning. adiWEAR(R) outsole for best durability in high-wear areas. TRAXION outsole for maximum grip in all directions. Decoupled heel to deflect impact shock.