CarSafe Travel Harness. This dog car harness ensures you and your dog travel safely and within the law on road trips. Utilising your car seat belt system to create a safe dog car seat belt for your pet. The dog travel harness also has a padded chest piece for harness stability and comfort. Suitable for a wide range of dog sizes and breeds, it can also be used as a walking dog harness when you arrive at your destination. Sizes Chest Size X Small 40-52CM (16-20.5) Small 50-64cm (20-25) Medium 62-74cm (24.5-29) Large 72-90cm (28-35.5)