Material Composition: Other Materials/Textile/Other Materials. Upper Outer Material: Synthetic. Lining Material: Polyester. Sole Material: EVA. Water Resistance: Not Waterproof. Fastening: Riptape Toe-to-toe comfort and athletic style combine in Skechers Bounder-Tech - Ultravoid. This lightweight sneaker features a mesh and synthetic upper with stretch laces, adjustable instep strap, midsole tech piece, and a cushioned comfort insole., Skechers easy on, easy off Adaptive Closure for a customized fit, Cushioned comfort insole, Stretch laces and adjustable instep strap Skechers Bounder-Tech - Ultravoid | Navy/Lime | Boy's Lightweight Adjustable Trainers