Although the twin-wall plastic material makes this case extremely light, it may collapse when hit by sharp objects. Stacking small heavy objects on any of the larger plastic surfaces will make it bulge and possibly damage the equipment inside.
Cases made by birch plywood can handle much more abuse, and will be handled according to its toughness when used in professional situations. It?s ok if you only handle your light-weight plastic case yourself. But once handled among plywood cases in a professional setting it will eventually break.