Upper: Synthetic. Insole: EVA. Outsole: Synthetic. Cushioned, Easy-Care, Single Strap, Ventilated. Flat. Design: Chunky, Contour, Cut Out. Toe Style: Open. Aids Recovery, Alleviates Muscle Soreness and Stiffness, Anti-Fatigue, Reduces Foot Fatigue. Suitable for: Post-Exercise, Recovery. Fastening: Slip-on. Ref: UTGT42763