I was looking for storage for small LEGO pieces of my children. This is perfect! The key for me was that the pieces do not move from one box to another by bottom or top (once the closed box) and this is the case. The pieces can not move from box to box. Also very convenient removable partitions. The next purchase will be a larger box (small LEGO pieces finally, there are many!). Too bad the shipping costs are so expensive! (6.50 euros for two boxes so light and small!) Almost the same as the boxes themselves!