The double-layer premier leather sandal offers all the great features found in the single-layer leather, but with an added layer of midsole for more cushion and arch support. Double Layer Premier Leather 1" Premier Leather Strap Double Stitched Box X Toe Construction Bonded Nylon Thread Triple Glued Non-Slip Bottom Sole Original Rainbow® Woven Label Rainbow® Lifetime Guarantee The double-layer premier leather sandal offers all the great features found in the single-layer leather sandal, but with an added layer of midsole and pin line, which starts at the arch and rises towards the heel, for even more comfort and support. The midsole is made to break down 10% under each foot so you have the perfect mold for your individual feet.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 rest on the non-slip Rainbow® bottom. This sandal displays the Original Rainbow® woven label on the strap, the mark of a genuine Rainbow® Sandal. Sizing GuideSmall: US Men's 7.5-8.5 (Length 10.5")Medium: US Men's 8.5-9.5 (Length 10.75")Large: US Men's 9.5-10.5 (Length 11.5")XLarge: US Men's 11-12 (Length 12")XXLarge: US Men's 12-13.5 (Length 12.5")XXXLarge: US Men's 13.5-15 (Length 13.5")