Rubber sole A foam midsole gives you a soft, cushioned ride underfoot. A breathable mesh and synthetic upper helps keep your foot secure. Stretchy material provides a better fit with more room at the toes. The heel and tongue are shaped to support your foot. Both the collar and tongue are soft and plush for comfort with every step. The rubber outsole provides traction where you need it. Skins at the toe for durability. The Nike Renew Run 2 continues to deliver a smooth ride for your miles. It's designed with better shaping around the collar and tongue to help support your foot. When running becomes an everyday goal, this shoe delivers a comfortable feel and durable traction.