BeSafe Stretch - Lower Tether Straps
BeSafe Stretch - Lower Tether Straps
Available to Order - Dispatched Soon
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One pair of lower tethers are included with the BeSafe Stretch seat. If you have several cars, it might be convenient with an extra pair of lower tether straps so you don’t have to de-install them each time when moving the seat between vehicles. Buy an extra pair only if needed.

Very good and quick delivery.
A bit tricky fitting them to a 2015 VW Polo 5 door car, needed to remove the rearmost front passenger rail bolts, slip the tethers under, clean the removed bolts up and apply fresh Loctite.
I'd probably have preferred if BeSafe provided tether buckle plates as using them would have allowed the front passenger car seat to still move back enough for an average height person to sit in it.