71fEOGslm0L._AC_SY300_QL30_.jpg。Brand New, never been worn. Very comfortable Fitflop men\'s sandals. US size is 11 but they run small so they should fit US9.5-10. MICROWOBBLEBOARD - has a triple-density construction and is ergonomically designed for cushioning and comfort underfoot. Aiming to deliver all day comfort, it helps to absorb and can also diffuse underfoot pressure. It does this by instantly increasing the contact area of the foot to the midsole. What is Microwobbleboard? The Microwobbleboard™ was developed by Dr. David Cook and Darren James at London Southbank University, and consists of triple density EVA Foam rubber, which helps to activate muscles throughout the lower body. The design is such that it also increases the range of movement of the feet.