The jumbo bags are HUGE. I could easily fit 3 or 4 queen size comforters in the bag and still have a bit of space. I don't know how effective the pump that came with it is, because I used a car vacuum. My only issue is that the item has to be under the cap for it to really give the best results. And when you have 2 or 3 comforters in the bag, some will be better suctioned than others. Also, there could have been a better way to close the bag. That was a very time consuming part of the process. Otherwise, good bag

the bags were bigger than i thought but they worked out great.

I got these for traveling and I put it in my rooftop cargo box, once I arrived at my destination about half of them had expanded

Large bags. Takes a minute with the pump but it works.

I ordered the 6 pack, the bags are made well and worth the price but I did not get a pump with them. Maybe its only when you buy the 12 pack??? I used my vacuum cleaner and that works well but the pump would be better. Its been a few weeks and they are holding a vacuum. If buying, inquirer about the pump first.