These are fantastic! Especially now that we are on the down-slope of winter to pack away heavy clothes and blankets. I have used the original Space Bags and these work just as well. The sizes are perfect for blankets and pillows. I tried it out first thing on my extra large Fleece tie blanket. I used the large bag and it fit snugly. It cut down storage by about half and was easy to use with our ordinary vacuum. (We have a bag less with a smaller than normal hose that acts as the brush hose also, but it still fit around the hole just fine. The only thing I don't care for on these bags is that the zipper mechanism completely detaches from the bag. I feel like this is a piece that for me could get lost really easy. But I could also see the benefit of it coming off for laying flat during storage without interfering, so I didn't dock a star for my personal preference and overall I would highly recommend these bags at the price and their effectiveness. * I received this item for free or at a discount in exchange for my honest review. I rate it only on my experience with similar products and try to remain as objective as possible.*