Reebok ZJet Run Running Sneaker Shoe - Womens Synthetic Breathable mesh upper with synthetic Nanoweb overlays for durability. Low-cut silhouette for added mobility. Lace-up closure for optimal fit. Heel pull-tab for easy on and off. JetFuse technology features full-foot air channels that cushion and bend with the foot. Smooth textile lining. 3-D IMEVA midsole for lightweight cushioning and durability. CRTek high abrasion rubber in high wear areas for lightweight durability underfoot.