Ankle Boots by UGG Australia The Bailey Button II features the iconic Ugg silhouette, upper constructed with premium materials with the addition of a pre-treatment against moisture and staining as well as the Treadlite outsole for extra comfort and traction. Complete with an oversized button feature on the side and Ugg branding on the heel. - Twin-face sheepskin & suede mixed upper - Pre-treated against stains & moisture - UggPure wool insole - Treadlite by Ugg outsole - Please note: If you receive a UGG product with a half size label on the box this equates to the full size ordered. Eg. UK 6.5 is, in fact a UK 6.