This top case is nowhere near 57 liters, not even in your wildest dreams. With internal dimensions of 43x36x31, it could have been 47.98 liters, but in the end, it's not even that much because if you consider that the sides are slanted, we end up at 43.5 liters (calculated). The only thing that could be 57 liters is the cardboard box it comes in. I ordered it through Skroutz without seeing it up close. I would suggest that before you buy it, you go and see it first. As for the build quality and ergonomics, I must emphasize that the plastic is not of very good quality and I fear that with the sun it will polymerize quickly. The lid does not have stops to limit the maximum opening and if you open it even with minimal force, the hinges will break. The base is not for easy removal and reinstallation; you need to get the contact points just right. And finally, all the parts that make it up are attached with simple rivets that will loosen over time on the plastic. The €85 I paid for it certainly does not reflect its value.