Vionic EurekaPowered by Vio Motion Technology to balance the whole you. The Eureka features a fisherman inspired leather upper with four points of adjustability. Hook and loop closures on all straps provide a secure, customizable fit. A soft microfiber footbed cushions every step for all day comfort, while Vionics exclusive technology supports natural alignment and full body balance. Uppers: Leather. Microfiber covered footbed that offers a smooth feel and