VIONIC Willa II slip on leather flats We've taken our top-selling slip-on loafer and updated her with a flexible, cushioned rubber outsole for a more casual take on classic style shoes Upper: Leather Footbed Lining: Removable PU Covered EVA. Outsole: Durable Rubber. Heel Height: 0.5". Built-in VIO MOTION Technology footbed featuring contoured arch support, with shock-absorbing cushioning, deep heel cup to provide stability, and forefoot flexibility. New in the box 11 W WIDE Black