The UGG Classic Ultra Mini Black is the most iconic silhouette with a lower shaft height of 3.5 inches. The pre-treated boot is made of signature Twinface sheepskin upper, ultra-soft UGGplush™ lining, and a flexible, lightweight sole. The boot features Treadlite by UGG™ outsole, asymmetrical topline, overlock stitch detailing on seams, and polyester binding. It includes a rear pull tab, suede heel counter, and leather heel label with embossed UGG® logo. The shaft height is 3.5 inches.