Zipper closure for easy on and off. Nylon binding. Fully lined in luxurious, UGGpure wool. It’s a luxurious, natural wool woven into a durable backing that enhances the overall product experience. UGGpure delivers a plush sensory experience with every wear. Generously cushioned footbed is lined in UGGpure wool. Treadlite by UGG outsole.