Gucci's new early spring Double G crystal diamond buckle flat slippers decorated with crystal Double G styling accessories inject a modern new charm into a series of women's shoes. These sling-back ballet slippers are crafted from shiny black patent leather and are embellished with eye-catching branding on the uppers. Logo details. For the high-end version, it is recommended to buy the original version at the counter. All details and materials are the same as what you buy at the counter. The outsole is made of imported cowhide and sheepskin. Size number: 35-41 (40.41 is custom-made and cannot be returned or exchanged).