For your next hiking adventure, the new Merrell Capra Bolt Air hiking shoes provide security and a lightweight feel with a new mesh upper. You’ll experience excellent agility, stability, and a more efficient stride on faster, hilly trails. Explore your outdoor speed on the most challenging trails with confidence.Upper: Synthetic and mesh upper provides breathable flexibility. Molded TPU cage delivers a secure fit to help prevent slippage and blisters. Bellows tongue helps keep out debris. Padded tongue and heel collar enhance comfort. Traditional lacing closure offers a secure fit.Midsole:EVA midsole provides comfort and stability. The Merrell air cushion in the heel absorbs shock and adds stability. Merrell M Select™ FIT.ECO blended EVA contoured footbed with organic odor control. Molded nylon arch shank. Removable footbed is treated with M-Select™ FRESH shoe odor control. Breathable mesh lining ensures proper ventilation and comfort. Outsole: M Select™ Grip with Capra hoof-inspired sole provides sure-footed stability on unpredictable terrain.