Available online only. Karl is a traditional open-back clog that features a roomy, reinforced toe-box, an anatomically contoured PU midsole, an inner frame for stability and support, a generously padded instep collar, and an anti-fatigue rocker bottom that enhances forward motion while walking. Protective heel counter allows the heel to move up and down freely while providing lateral stability Padded instep collar for extra comfort Leather uppers. Nubuck treated 3M Scotchgard™ protector for stain resistance Roomy reinforced toe box allows toes to move comfortably with plenty of "wiggle room" Leather-lined, breathable, single-density open cell PU foam sockliner Contoured PU midsole provides arch support Inner frame provides stability PU outsole with a wide heel strike for stability Anti-fatigue rocker bottom promotes forward foot motion for shock absorption and energy return