Upper: Synthetic. Lining: Synthetic. Insole: Synthetic. Midsole: Synthetic. Outsole: Synthetic. 5 Eyelets. Ergonomic Footbed, Lateral Shell, Power Cushion. Flat. Cut: Low Cut. Design: Contrast, Patterned. Toe Style: Closed. Durable. Fastening: Lace Up. Ref: UTCS3040