The Reebok ZigNano Ignite Trainer 2 training shoe features a mesh and synthetic leather upper that offers comfort, fit and durability. ZigNano provides low-profile, responsive cushioning. Removable PU sockliner provides extraordinary cushioning and accommodates orthotics. Transition Bridge aids the heel-to-toe transition. Forefoot flex grooves add flexibility. High abrasion rubber outsole gives durability. Wt. 11.8 oz.