All seasons, any distance – the Norvan LD 3 GTX is made to run all year. The upper has GORE-TEX protection for breathable comfort in the wettest conditions. The dual-layer internal construction minimizes friction, the toebox is sized to accommodate splay, and the heel and forefoot stack absorbs shock. Advanced materials – Vibram Litebase sole, InFuse midsole – shed grams, and the grippy Vibram Megagrip outsole has an aggressive 4mm lug pattern for confident bite on muddy trails.