With the Nike® Flex Runner 4, ready to race into fun. A flexible, bootie-like design makes it easy to pull on, while stretchy straps help secure the fit. Flex grooves in the outsole allow for natural foot movement, helping to find the perfect stride. What's New Feedback was heard, leading to updates in the fit of the midfoot strap and the collar for easier slipping on and all-day comfort. Pull on and Go Pull tabs on the heel and tongue work with a stretchy inner sleeve to facilitate easy putting on. Elastic straps run behind the heel and across the top of the foot to provide a snug, secure feel. Play Anywhere Flex grooves in the outsole add flexibility, making every step feel natural. Multisurface traction works with sturdy foam that wraps around the heel to deliver grip and stability during directional shifts. Durable Comfort The toe box is reinforced, and durable materials are used throughout to ensure these kicks withstand how kids play. Soft, springy foam in the midsole cushions each step. Lace-up closure Imported Material Fabric