RAINBOW SANDALS. SINGLE LAYER CLASSIC LEATHER. 301ALTS-TTBK. BLACK.The single layer classic leather sandal is made of top grade leather that has a polished top sole giving it a fresh clean look. It is also embossed with the Rainbow logo. The strap also classic leather is double stitched and the nylon toe piece is secured with a box X stitch all using bonded nylon thread.