Redback is the 100% Australian Boot Company. The Great Barrier Pull On Boot is a 6" slip-on boot featuring 100% full-grain puma brown leather and is engineered with V-cut stitching to repel water and moisture. Your feet will stay dry and comfortable from the time you put them on. The TPU (Thermoplastic Polyurethane) soles are oil and acid resistant. MARK II Machine tested slip resistant on oil, acid & water. The mid soles have PU (Polyurethane) shock-absorbance. Redback's unique Anatomic Sole cradles the foot to reduce arch sagging and prevents foot strain, fatigue and related leg and back pain. Note: Redback's come in UK Sizes and are about one size smaller than US sizing. Size 10 US is the equivalent to size 11 US.  Please refer to the size chart to ensure the correct size!