Just slip the seatbelt through the loop of the Safety Beltz Clip, clip it onto your dog’s Harness (not collar!) and your mutt (and you) can enjoy your joyride stress free. This product is designed to be used with a Rogz harness. It is to help prevent driver distraction and restrain the dog to one position in the vehicle. In the event of a car accident it may not prevent injury to the passengers or your dog.