The 1Z Coat is a hi-tech coat designed with the same high performance textiles found in a world class ski jacket. The 1Z Coat is secure, warm, waterproof and washable. A cross section of the material shows the waterproof layer built in. The 1Z Coat combines innovative new textiles with our exclusive built-in harness system for an easy, secure and comfortable fit. No more stressing out over putting a bulky harness under or over a coat. Just attach your leash and you are ready to go!