The Doggie Design Seat Belt Strap Leash was created as a safety feature to keep your little or big dog SAFE while driving in your car. It works perfectly with our American River Choke Free Harnesses and our Wrap & Snap Choke Free Harnesses. This is the safest combination for your dog because it pulls from the chest and not the neck or trachea area. The Doggie Design Seat Belt Strap Leash Features: - Easy Click-In Seat Belt Connector on one end - Fits most all vehicles - Heavy Duty Snap Hook one the other end, hooks onto any D-Ring on all of our Harnesses. - 1 Inch Wide Heavy Duty Super Strong Non-Fray Woven Polyester. - Length Adjustable from 13 inch to 23 1/2 inch long, allowing your dog the freedom to move as much as YOU want.