The Emu Buller is a ladies winter boot with waterproofed nubuck leather uppers. The boot has a secure lace-up fastening, with an extra pair of laces included in the box. Buller features an Australian Sheepskin lining for a warm and cozy feel, as well as a removable sheepskin-topped footbed. The Vibram-branded sole unit is made with durable, high-quality rubber with a minimum of 30% recycled materials.