?Z-strap? walking sandals from FitFlop. Crafted with a canvas upper, the master strap is secured by Velcro and adjusts both the toe strap and ankle strap for the perfect fit. The sandals are constructed with built-in underfoot arch contours for comfort. The sole is created with FitFlop?s original ?Microwobbleboard? technology, helping to absorb shock and diffuse underfoot pressure for extraordinary comfort. Upper: Canvas. Midsole: Microwobbleboard. Sole: Rubber.