Definitions for "tether strap"
Keywords:  seat, factory, restraint, belt, anchor
a belt that is attached to the car seat and bolted to the window ledge or the floor of the car
a strap made of seat belt material that is attached to the back of the child restraint
An additional belt that anchors the child safety seat top to the vehicle frame; keeps the restraint from tipping forward on impact; can provide an extra margin of protection. Can be optional or factory installed. A tether strap is typically available on most child safety seats manufactured after September 1, 1999.