The wedge sole is rockered — slightly curved from heel to toe — which encourages a rolling step rather than a flat one, and the thicker midsole gives more underfoot cushioning than a standard flat-soled loafer. Seven colours are available: beige, white, light purple, sky blue, grey, brown and black. That rolling motion is designed to take some of the repetitive strain out of walking, which is worth knowing if you're on your feet for long stretches at a time.