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? Benefits - Leather and GORE-TEX make for a durable shoe. Vibram outsole adds traction and durability. Product Details - Padded collar.