I have Space Savers that didnt hold worth a hoot, but the one back I paid a lot for (single bag) has reinforced fabric sides, and has 8 pillows and some other stuff in it. Its been in the top of the closet for 3 years without expanding. Hmmmm. If I have not opened it for that long, suppose I could just give away the contents and keep the bag????? The only drawback to this bag is the weight; it holds so much stuff it probably weighs 30 lbs or more...