The Nike Shox El2 is a supportive and stable training shoe designed for gym-based functional training activities. Mesh and leather upper with Velcro brand fastener for secure fit. Dynamic midfoot strap adds support. Lateral forefoot support strap provides stability. Nike Shox El2 unit in the heel. Phylon midsole gives a light and comfortable fit. Non-marking green rubber pods with a gym traction outsole deliver flexibility, durability and support where you need it.