The trail runner that started it all continues to evolve. With the Lone Peak 5, you get all the legacy with all the updates. For the first time, the Lone Peak features the responsive AltraEGO(TM) midsole. The MaxTrac(TM) outsole returns, ready to conquer all types of trails, and an updated StoneGuard(TM) brings an extra layer of rock protection. Features Weight: 11.1 oz / 318 g Midsole: Altra EGO(TM) Outsole: MaxTrac(TM) Cushion: Moderate Stack Height: 25 mm Upper: Quick-Dry Air Mesh Benefits Footshape Our signature FootShape(TM) comfort gives your feet more space to sit naturally and is designed to address biological differences in men's and women's feet. Balanced Cushioning Our Balanced Cushioning(TM) platform positions your heel and forefoot at an equal distance from the ground, encouraging better alignment, better form, and a low impact landing. Altra Ego Our original Altra EGO(TM) foam is designed to provide added energy return and a responsive, yet soft, comfortable feel. Maxtrac Our grippy MaxTrac(TM) outsole provides the perfect combination of grip, traction, and durability on all types of terrain. Trailclaw These canted lugs on the outsole are strategically placed beneath the metatarsals to provide added traction underfoot. Gaitertrap This hook-and-loop tab allows our strapless gaiter to easily attach to the shoe, adding protection against rocks and debris.