I had to put some guitar cases away for storage but it's TOO DUSTY. I know there are other products, but WHERE? .a from"WHO"? Well these bags are BIG ENOUGH to get the job done. Why such a big box full of bags? Light. I HAVE LOTS OF GUITAR CASES! All guitars are hung on hooks in a clean, air-conditioned room. As long as the suitcases are properly packed and protected from dust, I'm happy. Of course I have a case at home for my guitar and bass in case the need to "play" arises, but that's rare these days. So you don't have to pack the contents of a 55 gallon drum to benefit from these packages.