Perf Leather Slip On ShoesDescription The Classic Slip On, with its No Laces, No Problems approach, was first introduced to the world in 1979. Since then, its become a pop culture icon, known for its ability to dress up or down, its reliable comfort, and the flexibility to adapt to everyones style. Made with perforated leather uppers for an elevated look, the Classic Slip On Leather is a timeless silhouette thats right for any occasion.