UGG chukka boots made from full-grain nubuck leather in grey. Moccasin-inspired design with a moc toe, a lace fasten and drainage ports. Customised Dynamic Support Platform shank, enerG Comfort System insole and a Treadlite by UGGTM outsole complete the construction. Unlined. Upper: Leather. Sole: Treadlite by UGGTM.