Women's Clarks, Un Rio Tie Sneaker. Part of the Unstructured collection, these minimal sneakers offer a retro look and feel! You'll love the 360-degree comfort of the dual-density arch support, a high-rebound EVA midsole and flexible rubber sole. Retro styled perf leather upperTraditional lace-up designBreathable leather sock and Ortholite moisture-wicking technology insoleEVA midsole with high rebound technologyFlexible rubber outsole