These are good quality and will definitely last a long time.
These complement the trunk space and will also protect the indicator electrical controller located in the left hand side drop off area plus if you have fitted the trunk mat, make this sit flat on the sides. These boards are important if you wish to carry things in your trunk, as they will no longer fall down into the drop off areas in your trunk.
I am very happy with the product and would definitely recommend it.
It is not a large outlay at all, and it will make the cosmetics as well as practical use of the trunk much better.