KEEN Women's Concord Mule 100% Soft Nubuck Imported Rubber sole Triple-density, compression-molded EVA midsole provides a combination of cushioning, support and durability Leather-lined, anatomical EVA footbed adds extra comfort underfoot Soft nubuck leather upper features an elastic instep strap that stretches for a customized fit Non-marking rubber outsole delivers durability and sure-footed traction