The Men's Altra Lone Peak 9 Trail Running Shoe is a lightweight shoe for running the trails. Gain speed and plenty of mileage with a breathable shoe featuring a 100% recycled ripstop mesh upper. The Algra EGO midsole delivers a 25mm stack height, with zero drop for a natural stride, neutral support, and plenty of cushion. Equipped with the MaxTrac outsole for grip and durability on a variety of terrain you'll meet along the way.