The 'Upena (oo-peh-nah) Sandal by Olukai is crafted with the highest quality materials, inspired by the artisanal webbing of traditional Hawaiian fishing nets. The premium full-grain leather straps hold a microfiber lining that is soft against your skin and moves with you. The antiqued metal buckle on the adjustable strap creates a customizable fit for any adventure. Complete with an anatomical PU footbed that sports a more low-profile arch, and the non-marking rubber outsole, this stylish sandal will keep you moving all summer long. High-Quality Premium Full-Grain Leather Straps w/Microfiber Lining, Adjustable Ankle Strap w/Antiqued Metal Buckle, Anatomical Poured PU Footbed w/Microfiber Texture, Non-Marking Rubber Outsole w/Ocean Current Inspired Traction Pod Design, Slotted Toe Leather Post w/Comfortable Bonded Construction, Warranty: One Year, Material: Leather/ Microfiber Lining, Type: Sandals, Sole Material: Non-Marking Rubber Outsole, Model Year: 2020, Product ID: 600825, Model Number: 20288 SASA 7, GTIN: 0883956217056