Super stable storage of SD memory cards a little bit too hard

The SD cards are supported by two precisely shaped solid foam rubber inserts. The closure is a little stiff, but increases trust in the specified water-resistance. I have not been thrown into the water to test if the protective case is really waterproof but enough for me and a good protection against splashes.
Unfortunately, the box is quite heavy because of the sturdy construction. Who attaches importance to low total weight of its equipment, therefore should look around for alternatives. Therefore, a point deduction.