- Jil sander's new Jil Sander hollow toe-cap single shoes. This hollow single shoe is really beautiful. Two thin straps extend from the toe to the tail to form a hollow side, which adds a bit of smartness and cuteness to the minimalist style. It's a bit hard to resist, it's soft and comfortable and won't easily rub your feet! Upper: cowhide, lining: sheepskin, heel height: 6.5cm, sole: Italian thickened genuine leather outsole, size: 35-39 (40 is custom-made and cannot be returned or exchanged),