From Nike, the Girls' Flex Runner 4 Sneakers feature:  Mesh upper Pull tabs on the heel and tongue work with a stretchy inner sleeve to help make these shoes easy for kids to put on themselves Elastic straps run behind the heel and across the top of the foot to provide a snug, secure feel Fabric lining Soft, springy foam in the midsole helps cushion their every step Multi-surface traction works with sturdy foam that wraps around the heel to provide grip and stability when kids shift directions Rubber outsole Imported.