FITFLOP Bon Leather Back-Strap Sandals Dark Tan Brown Orthopedic Arch Support 6 DESCRIPTION: You may not wear any other sandals all summer long. With adjustable built-in back straps, our chunky-chic Bon makes an unbeatable all-day-long sandal. With amazing underfoot cushion, it's pretty much perfect. Upper Material: Leather Outsole:Slip-Resistant Rubber Technology:Microwobbleboard Launched in our very first sandal ten years ago, our patent-pending, triple-density Microwobbleboard midsole was engineered by two pioneering British biomechanists. Delivering extraordinary comfort, it not only helps absorb shock but can also diffuse underfoot pressure, by instantly increasing the contact area of the foot to the midsole. *See all pictures for condition.