This specific foam/sponge is exclusively for the Dewalt DS 165 toughsystem 2.0 toolbox. Very good quality sponge. It has a height of 5cm and the bottom is 2.5cm, so a total height of 7.5cm. Excellent cushion for your valuable tools. However, there is an issue with the useful space of this foam, which has dimensions of 44cm length and 22cm width. It is a rectangle made up of many sponges joined together, and you can remove as many as you want and shape it as you prefer (always speaking in straight and right angles). But if you want to solve the issue of useful space, outside of the aforementioned rectangle, there is plenty of compact foam that perfectly fits all the corners of the toolbox, where you can gain a considerable amount of space. If you also want to include the compartments or the compartment that the toolbox has inside, you can cut the foam as you wish and do whatever you want. Lastly, for the price of €14 that it asks for, I think it's a bit expensive. I believe €10 is more than enough.