UGG Men's Byron Slip-On Moccasin Slippers. Made from a comfortable combination of leather, suede, textile, and man-made materials, these slippers feature a warm wool lining and cushioned insole for maximum comfort. The slip-on design makes them easy to wear, and the chestnut color adds a touch of classic style. Perfect for casual occasions, especially in the winter season. These slippers have a standard shoe width and are available in US size 11.