OLUKAI Hauhoa Sandal - Women's Synthetic Upper: Premium full-grain leather straps distressed for a supple feel and lined with soft synthetic leather. Footbed: Anatomical compression-molded EVA midsole with antiqued and oiled full-grain leather footbed with leather binding edge. This sandal provides LOW arch support which is great for people with plantar fasciitis and those who want to avoid arch and heel pain. Styling: Unique hidden elastic midfoot strap for an adjustable fit- double row saddle-inspired micro-stitching and metal rivet details. Non-marking gum rubber with fish scale pattern and infused with natural burlap fibers.