The first thing I noticed was the material from which the top cover is made, a very durable transparent plastic similar to polycarbonate can withstand a hammer blow and does not become cloudy over time. I was also pleased with the metal clasp, which does not fly off and holds securely. The plastic of the case is thick and has reinforcement, which allows you to close the drawer on weight. Before that, there were organizers from other companies that constantly broke down, and they could only be closed by laying them on a flat surface. It is also convenient that the cells can be removed. In the series there are boxes of different depths and sizes that can be connected to each other.