adidas Kids' Viper Cushion + Running Shoe 100% Air mesh and leather Rubber sole Dynamic 3-d cushion eva midsole provides for lightweight cushioning; heel adiprene provides heel impact absorption Adiwear outsole for best durability in high-wear areas Eva insole for comfort 3-d foam construction midsole for articulated movement and added cushioning; adiprene insert in heel for comfort and shock absorption and injected eva for long-term lightweight cushioning