Click to learn more about the biomechanically engineered, ergonomic FitFlop® footbed. For the women's FitFlop sizing guide. Don the sporty look wearing the FitFlop Surff. Crafted from cotton webbing, leather upper, this pair of sandals features round toe design, adjustable hook-and-loop strap closure, and brand detailing on the footbed. Lycra lines, and Microwobbleboard technology footbed for extra comfort. Rubber outsole.