CRASH-TEST CERTIFIED: Small, medium and large size safety harnesses are certified crash-tested SAFELY SECURE: Proper fit is important; to best protect your dog, please refer to the sizing chart to confirm measurements before ordering COOL AND COMFORTABLE: The harness has a fully padded vest area with a breathable liner to keep your furry friend comfortable during travel DECREASED DRIVER DISTRACTION: The safety harness keeps your furry friend snugly secure in their seat so you can focus on the road while you travel ATTACHEMENT OPTIONS: The seat belt tether attaches to the safety harness at one of the multiple connection points keeping your dog safe while giving them mobility in their seat IMPORTANT: While travel with a safety harness is typically safer, use of the PetSafe Happy Ride Safety Harness does not guarantee your pet will be free from injury during a sudden stop or collision QUALITY GUARANTEED: PetSafe brand has been a trusted global leader in pet behavior, containment and lifestyle innovations for nearly 30 years; we help pets and their people live happily together