The Rainbow Double Thick Premier Leather Women’s Sandals. The double layer premier leather sandal offers all the great features found in our single layer leather, but with an added layer of mid sole for more arch support and the original 1″ strap. The double layer premier leather sandal offers all the great features found in our single layer leather, but with an added layer of mid sole and pin line, which starts at the arch and rises towards the heel for even more comfort and support. The top sole is premier nubuck leather, and is embossed with the Rainbow logo. The 1″ premier leather strap is double stitched, and the nylon toe piece is secured with a box X stitch, all sewn with bonded nylon thread. The layers are all triple glued for maximum durability, and rests on our non-slip Rainbow bottom. This sandal displays the Original Rainbow woven label on the strap, the mark of a genuine Rainbow Sandal.