Great in theory, dismal failure in execution. I tried these once before, the main problem is that they dont stay sealed, air escapes and they become nothing more than overpriced plastic bags. The luggage size, non-vacumn sealed rolled variety dont work at all. The vacumn sealed larger bag sizes arent much better. Of my previously purchased set, I have only one bag that survived my move sealed, flat and intact.My new place has limited storage so I gave it another try. Now, its 1:22am, I've been fighting with a brand new pack for several hours. I have the floor littered with 6 large stuffed bags. I've tried re-vacumning and resealing and even duct taping - they plump right back up! I give up!!! Never again. Just use garbage bags. The only benefit is that you can see whats inside and that it is a thick, sturdy plastic bag.