Vionic Women's Rest Zarie Slide Sandals, Black, Size 8, (Runs 1 size large, will fit a size 8.5 or 9 foot) Supportive Sandals and Indoor/Outdoor Slip Ons That Includes an Orthotic Insole and Cushioned Outsole for Arch Support Durable Rubber Outsole, Cushioned Insole A modern slide sandal style that looks good and feels good with every step. Vionic Shoes offer stability, cushioning, arch support, and flexibility. The technology helps correct pronation and promotes full-body alignment. It’s designed to help alleviate heel pain often caused by plantar fasciitis or achilles tendonitis.