Nike Big Kid's Flex Runner 4 Running Shoe, Bright Mango/Anthracite-Vivid Purple, 5YBrand: Nike Color: Bright Mango Anthracite Vivid Purple Features: You spoke and we listened. For the Flex Runner 4, we updated the fit of the midfoot strap and the collar to help make these easy to slip on and comfortable enough to wear all day. Pull tabs on the heel and tongue work with a stretchy inner sleeve to help make these shoes easy to put on. Elastic straps run behind your heel and across the top of your foot to provide a snug, secure feel.