Seat belts do not allow people to move laterally from seat to seat, or to fall into the foot well. The KONG Ultimate Safety Tether helps you to secure your dog in a similar way to humans. It is safe, highly adjustable for different sized dogs and offers you the control that standard dog tethers do not. The KONG Ultimate Safety Tether uses the LATCH /ISOFIX/CanFix 3-point anchor system which was originally designed for securing infant seats.