I was dubious about these at first, even more so when I got them and they weren't solid, but were completely pliable. I figured, what good are they going to do? However. After using several times now, I am a firm believer these are the BEST and EASIEST way to pack. First off, I tend to be a "messy" packer, these help me stay organized. They also allow me to get twice as much packed as I normally would. They are quite simply the best thing ever. I not only use them in a suit case, I also use them in a weekend bag for camping and other short trips, they're great for everything! If you're a doubter, doubt no more and get a set. They are PERFECT!