adidas Little Kid/Big Kid Viper Cushion Running Shoe Leather and mesh Synthetic mesh upper allows for improved breathability adiPRENE in the heel absorbs shock and cushions the foot Durable rubber outsole offers superior traction adidas-exclusive 3D EVA (Ethylene Vinyl Acetate) cushioning in the insole provides flexible, formfitting comfort and support Padded tongue, collar and footbed for extra cushioning