The BIRKENSTOCK Kay Pro clog features dual straps, with one securely attached to the shaft. The second strap, equipped with a concealed rivet, can be repositioned to function as an ankle strap for enhanced stability. This model is distinguished by its lightweight polyurethane sole, which is slip-resistant, promotes a natural foot movement, and is repairable. The upper is crafted from high-grade, exceptionally soft natural leather, coated with polyurethane (PU) for breathability and climate control within the clog.