Well, to be more precise, there is not enough cushioning. There are individual "cups" inside like you described, but there is not enough distance between each of the balls and the wooden box to prevent contact with very little shaking. There is a thin piece of foam on top of the balls, but it does not exert enough force with the lid closed to keep them in place. When I first picked up the box, you could hear them rattle against each other and the box. You can kind of see the spacing in the picture that I posted.