Rainbow Double Layer Arch Support Premier Leather 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 and pin line, which starts at the arch and rises towards the heel for even more comfort and support. Double layer premier leather. 1" leather strap. Double stitched. Box X toe construction. Bonded nylon thread. Triple glued. Non-slip bottom sole. Woven label. Leather upper. Imported.