the velcro adhesive pieces didn't stay attached to the plastic of the car interior for more than a few weeks before they came loose and left residue behind.
bernardi sent new adhesive strips for free, but we just started using a beach blanket in the back so we have the option of using the third row of seats whenever we want without needing to unfasten the cargo liner.
the liner would be great if you knew you were never going to need to use the back seats and had a specific need to haul messy stuff on a regular basis, but otherwise i suggest saving the money and just using a blanket or towel.