FitFlop Women's Inuk Boots - revolutionary leg toning technology is unleashed in season-right shearling booties Keep feet warm and stylish this season, while you tone and strengthen your legs! Inuk is warm and cozy and so cute with a suede / shearling upper and a shearling cuff that rolls down or up. The upper has a water repellent treatment for easy care, and the microfiber sockliner, along with the warm shearling lining, allows feet to breathe for a healthy foot environment. Developed by biomechanists at London's Southbank University, the FitFlop has been scientifically proven in independent studies to boost overall leg and calf muscle activity as you walk.