High version - GUCCI Gucci Double G Hollow Color Block Flat Slippers Gucci Interlocking Double G Hollow Slippers The interlocking Double G is renovated with enlarged hollow details on these leather/suede slippers. Upper: cowhide Embossed lining: Cowhide lining Heel height: 1 Sole: Italian genuine leather Outsole Size: 35-39 (34, 40, 41 customization is not returnable),