"The stretchy, comfortable Nike Sock Dart Big Kids' Shoe takes a minimalist approach for a streamlined look. Knit mesh upper is flexible and breathable. Adjustable, molded midfoot strap for a personalized fit. Phylon midsole for lightweight cushioning. Duralon rubber outsole with BRS 1000 in heel for traction and durability. Outsole flex grooves for natural movement. "