Kenetrek T-ZipEasy in, easy out is only half the story. We've sewn 4 way stretch panels into the uppers of these waterproof comfort boots so you don't have to forego stability for warmth and convenience. By sewing the liners to the back of the uppers, you can get in and out of them with one hand, and our super heavy duty zippers promise years of trouble free operation. The large surface area provided by the Tractor Tread outsole adds stability to unstable ground.