VANS Slip-On Black 27.5cm (US9.5) Vans Slip On, New, Unused The upper is made of canvas material. VANS' classic line icon model, the SLIP ON. 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.