Shaft Height: Approx. 18'' Tall. The Burly Air Grip 800G is made of premium ozone resistant and scent free rubber and offers 100% waterproof protection. Ankle-Fit design ensures a secure fit and comfort while walking. 800 grams of Thinsulate Ultra insulation gives insulating protection in the harshest environments. The self cleaning Air-Grip outsole provides traction in snowy or muddy conditions.