For higher water, colder temps and more stringent missions, these 9” waterproof boots will never let you down. Made with all best-in-class materials, from breathable waterproof Gore-Tex membranes and lightweight Thinsulate insulation to our exclusive multi-terrain Vibram Mutant outsoles. The side zip makes these boots quick to put on and secure, then just as easy to remove at the end of another day.