- Jil sander's new early spring toe-top half-flops, a catwalk metal leather cat-heeled series, sweet and cool, a bit hard to refuse, soft and comfortable and not easy to wear on your feet. Upper: cowhide, lining: sheepskin, heel height: 7cm, sole : Italian genuine leather outsole Size number: 35-39 (40 is custom-made and cannot be returned or exchanged),