UGG Australia uses only the finest, most luxurious Twinface sheepskin in the world. Only Grade A Twinface sheepskin which is luxuriously soft, dense and malleable need apply. UGG Australia put in a huge level of effort to make sure each sheepskin is put through an extensive process to ensure it will provide the signature UGG experience.Both sides of the Twinface are thoroughly examined as each pair of boots requires a large swath of material and even the slightest blemish will be cause for exclusion. Looking for uniformity and a flawless, UGG Australia claims to be at the height of all UGG boot production world-wide, continuously crafting fine-grained textured boots with no visible defects whatsoever.UGG Australia has been excelling in their line of footwear production for the last 30 years. Their design team believes in the durability, comfort and style inherent in every piece of sheepskin. Their claim that crafting footwear in sheepskin takes a patience and creativity unknown to working with other materials is at the forefront of their determination. The results are a clearly spectacular distinctive style that suits both a casual weekend as well as the runways.