The Merrell Women's Bare Access Arc 4 Running Shoe brings zero drop full foot connectivity to roads and harder trails. Merrell equipped this shoe with hyper responsive insoles to give you maximum control on either terrain. The MBound midsole provides responsive cushioning that offers immediate feedback at each step off, and the integrated EVA footbed works with the compression molded EVA to ensure stability and comfort. Merrell made the upper out of mesh for breathable ventilation, and TPU reinforces the shoe for long lasting durability. M Select Fresh odor control treats the lining and footbed with reliable odor resistance, and reliable Vibram rubber keeps the sole strong for seasons.