Add tread to trend with the ‘Upena sandal by Olukai, a multi-strap leather sandal with a textured rubber outsole. Adjustable ankle strap with antiqued metal buckle for a customized fit. Slotted leather toe post with a comfortable bonded construction. Outsole: Non-marking rubber outsole with textured pods for enhanced traction and durability. Footbed: Anatomically molded micro-textured PU midsole with laser-etched hook logo. Non-Marking Rubber: Our thermoset rubber is a compound of natural and synthetic rubber that will not leave marks or ‘scuffs' on surfaces of any type. Our gum rubber outsoles, as a natural material, will always naturally be non-marking.