- Jil sander's new Jil sander notch slippers have a consistent minimalist style, clean layout design, without any decoration, only the simple half-pack shape is the highlight, highlighting the temperament and personality! Super stylish, a bit hard to refuse, soft and comfortable, not easy to scratch feet. Upper: sheepskin. Lining: sheepskin. Sole: Italian genuine leather outsole. Size: 35-39 (40 is custom-made and cannot be returned or exchanged).