Sole material : Leather Closure type : Pull-On About this item :Play without limits! Featuring a flexible mesh upper, slip-on bootie construction, and easy-on pull tabs, the Nike Kids Flex Runner sneakers will step up their game! Kicks boast a breathable mesh lining and footbed for all-day comfort. Lightweight EVA midsole keeps fatigue at bay. Rubber outsole. FLEXIBLE FUN FOR YOUR RUN.From running to climbing the playground, the Nike Flex Runner makes everything easy. The slip-on design plus strap-in feel means you can forget the laces (for now!). Add in a foam sole that's super-duper flexible so every st.