There are two reasons to buy vacuum sealed storage bags. One, to compress a lot of fabric items to save space. Two, to keep those items fresh by removing the air. The problem with most vacuum bags is that the air tight seal slowly leaks in air and the bag inflates enough to no longer be compact storage. Not these bags. These vacuum sealed bags are well made and they stay sealed. I prefer assorted sizes so my small items stay together and larger, bulky items are combined to maximize storage space.  Great for packing and long term storage.