VANS Slip-On Black 28.0cm (US10) Vans Slip On New, Unused The upper uses canvas material. The SLIP ON, an iconic model from VANS' classic line. It's a popular model alongside the SK8-HI, OLD SKOOL, and ERA. Seasonal colors are well-received with each release, but the classic colors are a must-have sneaker. The waffle sole and simple design are its best features. It doesn't dictate style, so it's suitable for a wide range of occasions.