The Classic Ultra Mini is one of our most popular Classics. It impresses with a lower shaft, which makes it easier to put on and take off. The characteristic lambskin has been pre-treated to keep it looking good for longer. This Classic also has all the popular features of the original, such as characteristic UGG lambskin and an ultra-light, flexible sole. The outsole of this product is either a Treadlite by UGG™ outsole or an EVA outsole made from sugar cane. This sustainable foam is not made from petroleum-based ethylene, but from sugar cane to reduce our dependence on fossil fuels.