Britax Max Way spare tether straps
Britax Max Way Spare Tether Straps.
The Britx Max Way is pretty light and easy to move between cars. But if you want to save your self the hassle of refitting the rear tether straps to your car everytime then a spare set is probably not a bad idea.
They make moving your car seat in and out of the car so much easier as you can leave the thether straps in the car.