Review (3/5): It serves its purpose
This is a stiff plastic tray and does what it is supposed to do. I would have preferred a softer rubber.
The first one that was sent to me was just put in a large plastic shipping envelope and arrived cracked. It was immediately replaced with a new one - this time with bubble wrap and the plastic envelope. It arrived intact, but I think that was just luck. Either way it can easily crack during shipping, but at least they were efficient in replacing my damaged item.
One thing I didn't like was that on both shipments, the flap of the shipping enveloped was also glued to the boot tray! I had to work to scrape it off.