TBC Microwobbleboard Technology Triple Density Midsole – Three Stages of Footstep Firm at the Heel to reduce Impact Soft in the middle to maximise comfort, medium at the toes to help you "push off". Experience unparalleled comfort and support with these adjustable leather slides featuring FitFlop's signature Microwobbleboard technology. Designed for all-day wear, they offer a perfect blend of style and ergonomic function.