BRAND NEW RAINBOW Single Layer Classic Leather with Arch Support WOMEN'S MEDIUM (6.5-7.5) The single layer classic leather sandal is made of top grade nubuck leather; the top sole is embossed with the Rainbow® logo. also classic leather; it is double stitched, and the nylon toe piece is secured with a box X stitch, all using bonded nylon thread. The single layer mid sole and arch support is triple glued for maximum durability to our non-slip Rainbow® bottom. We finish it off with the Original Rainbow® woven label on the right strap, the mark of a genuine Rainbow® Sandal