My certified pre-owned LC500 convertible (2023) came without a trunk mat, even though the dealer description said it had one. I found the part number on this forum, but I wasn’t sure whether it would work with a trunk net. I also wasn’t able to find a single picture of the mat.

So, the part number is PT206-11210-02, it is about $100, and I can confirm that it does work with the net.