The stylish UGG Nightfall is made with twin-faced sheepskin and a durable molded rubber outsole.The wrap around lace feature adds a fashionable touch with wooden beads at the end.A removable and replaceable sheepskin insole gives extra comfort and warmth.The Uppers of UGG Boots are twin-faced sheepskin with suede toe and heel guards.Insoles are removable & replaceable.Insole is made of sheepskin,latex.