Women's Loaff Short Zip. Made with nubuck upper and Microwobbleboard midsole. Zip fastening for easy on and off. Launched in very first sandal seven years ago, patent-pending, triple-density Microwobbleboard midsole was engineered by two pioneering British biomechanists. Delivering extraordinary comfort, it not only helps absorb shock but can also diffuse underfoot pressure, by instantly increasing the contact area of the foot to the midsole.