Material Composition: Leather/Leather/Other Materials Upper Outer Material: Leather Lining Material: Leather Sole Material: PU Fastening: Slip On Built with super-lightweight materials, the Sorcha in khaki nubuck offers an easy slip on mule styling. Featuring a cushion comfort extra padded memory foam insole, in addition to a hardwearing yet lightweight PU Sole, you’re sure to be comfy all day in these closed-toe mules. Hush Puppies Sorcha | Khaki Nubuck | Women’s Mule Sandals