WDR stands for Wider, Deeper, more Resistant Black to the Floor BILLY Classic D|R High Tops (Deeper and more Resilient). This silhouette consists of three widths: Medium (MDR), Wide (WDR), and Extra-Wide (XDR). Functional laces for adjustable fit. Upper opens completely allowing for unobstructed entry and visual sizing confirmation. Thick knit Polyester fabric upper lining and sock lining for more durable wear and increased tear resistance. Wrap-around zipper closure provides fun and easy entry. Durable insole board and outsole rubber compound help to withstand aggressive toe drag and heel striking. Two removable insoles (3mm each) for adjustable depth and use of custom orthotics. Imported.