We've received quite a few requests for information regarding UGG's latest material, named UGGpuretm. So we've decided to put together this post hopefully clarifying what it is exactly.What is UGGpuretm ?It's real, luxurious shorn wool that is woven into a durable backing. Because it's like giving a sheep a haircut, UGGpuretm is a completely renewable resource and doesn't harm the animal. It's used in the linings and footbeds of select styles. UGGpuretm differs from twin-face sheepskin, which is where the animal's actual skin is used to make footwear, with the skin side on the outside and the wool turned to the inside of footwear.Why the move to UGGpuretm ?Because it's less expensive to produce. You may have noticed that some carryover styles from last year have actually gone down in price (the Stoneman, for example, is $30 cheaper in 2014 than 2013). That's thanks to the move to UGGpuretm .Sheep are animals that roam freely and they frequently get scratches on their skin that many consumers would call a 'defect' if they received footwear made from them. This makes it much more difficult to select 'perfect' skins to make footwear from, and these 'perfect' skins get quite expensive. It just makes sense then to use the wool woven into a different backing and make shoes from that. Let's face it, we wear our UGGs because we enjoy the comfort they offer on the inside primarily and the style second, right? Wink, wink...There's also other big picture benefits, such as it's more environmentally friendly, cruelty-free, etc.Keep in mind that twin-face sheepskin is a byproduct of the food industry and the rest of the animal doesn't go to waste.Does UGGpuretm feel any different from twin-faced sheepskin?Not really. Most people aren't going to be able to tell the difference between the two. I've been working here for 10 years and can't really tell the difference.How can i tell which styles are made with UGGpuretm ?On our site, look for the bullet points under the 'Inside' category where we'll be sure to mention it. If you're looking at a style with suede or leather on the outside then most likely it's an UGGpuretm product.