The Coastal Pet Product SEAT BELT RESTRAINT can be used with any style of harness to safely secure your pet to a lap or shoulder seat belt. Two sizes:  5/8" for small to medium dogs.  1" for medium to large dogs.

This item has not been crash tested and should only be used on a harness, NOT a collar.  Product is designed to keep dog dog in place and not roaming around the vehicle.  

Never leave a dog in an unattended vehicle.