This is a very misleading description. It reads like this is a multi-layer, reinforced product. I wanted to avoid yet another bendy panel that will simply crack when flexed. There are products on the market with honeycomb padding or reinforcing layers. The description says this is 15mm thick and has two layers, when in fact it is just 3mm thick. Can't tell whether it's made of more than one layer, but it looks pretty much like all the others, though at 3mm is slightly more rigid, so probably ok. I would have used it but the fit also turned out to be unsuitable so am returning it.