Fabric: A. Muller slippers are made of high-quality first-layer cowhide. B. Flip-flop sandals are made of three materials: small wrinkled cow lacquer, cowhide, and ribbed satin silk cloth. The outsole is made of high-quality original color cowhide, the inner lining and the feet are made of Italian mixed sheep leather, size: 35/39 (34 40 41 customized)