Keen has elevated its Uneek sandals with premium leather uppers from an LWG-certified tannery. The hybrid trainer sandals have woven cord details, a lace-lock bungee system for a secure fit and Eco Anti-Odour to keep feet feeling fresh. Lined with soft Nappa leather, the premium design has a PU footbed for long-lasting comfort and a non-marking rubber outsole.Upper: Leather. Midsole: PU. Sole: Rubber.