The OluKai Nui Men’s Sandal in Espresso is a flip flop style sandal with premium full grain leather uppers with laser cut perforations and stitching details. It is made with the outboard strap construction and offers a free yet secure fit for the most comfortable arch support possible. OluKai Nui Men’s Sandal - Espresso Features: Footbed: Compression-molded EVA footbed topped with premium full-grain leather. Anatomically correct contour for a personalized fit and sustained comfort over time. Outsole: Non-marking rubber and gum rubber outsole with island inspired pod design. Features: Decorative stitching on footbed, hand-sewn whipstitching, soft nylon toe post, embroidered logo.