DetailsUpper material: Leather — Thick yet supple leathers without additional dyes to keep the leather breathable, durable and comfortable. Footbed: The original Birkenstock footbed - Featuring pronounced arch support, a deep heel cup and a roomy toe box. Covered with a suede liner. The footbed molds and shapes to your foot. Sole material: Polyurethane - Extremely lightweight and abrasion resistant.