OluKai does not make your ordinary sandal -- they're one of the premium sandal company's around. The Kumu is made with premium full-grain leather straps with a soft pigskin and neoprene lining for comfort.
5 - 11, Women's
Construction: Premium full grain leather straps, pigskin and neoprene lining, flexible nylon webbing post, full grain leather or nubuck footbed, EVA midsole, rubber sole
Grip/Soles: Non marking durable rubber sole.
Other: Anatomically molded midsole for comfort, soft nylon toe post webbing, decorative stitching, embossed/embroidered logo detail.