Finally, a protective coat with built-in harness. The 1Z is a high-tech coat designed like a great ski jacket. The 1Z Coat is secure, warm, waterproof, and washable. 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 the coat. Just attach your leash and you are ready to go.