Shaft Height: Approx. 18'' Tall. The Alpha SST, made of rubber clad, naturally insulating neoprene has a scent proof gator on the top of the boots and provides scent control on the inside as well as the outside. This makes it a great choice for scent free stealth while traveling to and from the treestand. With a nylon fabric lining for comfort and snag proof durability. Features 2000G Thinsulate Ultra Insulation for colder hunting conditions. Scent free, 100% waterproof rubber over naturally insulating neoprene will keep your foot dry and warm in the wettest conditions.