Powered 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 Vionic's exclusive technology supports natural alignment and full-body balance.Built-in Vio Motion Technology, featuring contoured arch support, with shock-absorbing cushioning, a deep heel cup to provide stability, and forefoot flexibility for all-day wear, support and full-body alignment