BOOST midsole Continental Rubber outsole External heel clip and EVA stabilization frame Regular fit Escape into nature for an hour or a weekend in these adidas hiking shoes. A BOOST midsole offers long-lasting cushioning and energy return on rocky surfaces, while the mesh upper with seamless overlays provides a comfortable, sock-like fit. The stretchy and adaptive knit collar keeps dirt and debris from getting in, and the Continental Rubber outsole maintains confident traction across all terrain, wet or dry. This shoe's upper is made with a high-performance yarn which contains at least 50% Parley Ocean Plastic - reimagined plastic waste, intercepted on remote islands, beaches, coastal communities and shorelines, preventing it from polluting our ocean. The other 50% of the yarn is recycled polyester.