Crocs Unisex Duet Sport Clogs in Graphite/Volt Green are a pre-owned casual shoe made of rubber with a slip-on closure. The closed-toe clogs have a standard shoe width and a rubber outsole and insole. The clogs are designed for men and women and are a size M9 W11. The Crocs Duet Sport model is a solid patterned clog with a comfortable fit.