The BeSafe anchor straps are needed to properly install the BeSafe Stretch/ Stretch B in your car. They are attached to the floor of your car, so that you can attach the retracting lower tethers to the anchorage straps.
One pair of straps is included with the car seat. If you have several cars it might be convenient with an extra pair of anchor straps so you don't have to de-install when moving the seat between cars. Buy an extra pair if needed.
