Product Detail Casual. Classic. Out-of-this-world comfortable. No wonder our Trakk II flip-flops are perennial best-sellers. Lightly padded, adjustable uppers sit on our biomechanist-developed, all-day cushioning Microwobbleboard midsoles. With a hook-and-loop touch fastening and soft PU toe post. Here in smooth, sporty, water-resistant neoprene (the lining too), so drops of water roll off and your sandals dry fast if drenched. Perfect poolside/at the beach, as well as to wear everyday. Upper Material: Pu/Neoprene Lining Material: Padded Neoprene-lined Upper Fastening: Adjustable Hook and Loop Strap Outsole: Slip-Resistant Rubber Technology: Microwobbleboard