Ozlamb UGG crystal one button boots are made using genuine Australian Sheep Skin. They feature a suede upper for a more supportive fit and longer lasting durability. Internally genuine Australian Sheeps Wool will keep your feet cosy . This classic style with side button feature offers easy access and gives you added room around the calf. This timeless favourite is supported with a dual EVA and Rubber sole, which is light weight and comfortable for use around the home or stepping outdoors.