UGG Men's Hendren Tl Winter Boot 100% Leather Imported Synthetic sole Shaft measures approximately 7" from arch Boot opening measures approximately 9.5" around Insole: vildona and foam lined with uggpure wool for additional warmth and comfort Outsole is treadlite by ugg to provide maximum cushioning and traction Uggpure wool lining. Cold weather rated to - 20 degree Celsius Waterproof and seam-sealed construction. UGGpure wool insole lining Features medial zipper with moisture wicking cushioning