This design includes a standard retractable pet leash and a seatbelt tongue (male connector part), which is attached to the underside of the retractable leash unit. This design allows you to easily secure your pet to any seatbelt buckle in any vehicle and also adjust the length from the seatbelt buckle to the pets collar to a safe and comfortable distance by using the standard lock button on the retractable leash.
This drawing shows a side view of a retractable pet leash with a seatbelt tongue (male connector) attached parallel with the unit on the underside, beneath the handle.