The AF1 has always been a rugged shoe, but we're takin' it to the next level. The all leather upper sits atop a waterproof GORE-TEX membrane that helps protect you against rain, sleet and snow. Beneath that you got a Vibram sole designed to help you brave every wet, slippery and cold surface. Best winter ever? Design: Waterproof GORE-TEX fabric keeps you dry so you can focus on the adventure Nike Air technology absorbs impact for cushioning with every step Leather offers durability, structure and a premium feel Vibram outsole adds traction and durability