I am so impressed with this 20-pack set! You get an amazing variety of sizes for the price. I used the Jumbo bags for my thick winter comforters, and the Large ones were perfect for heavy sweaters and jackets. The double-zip seal is very sturdy—I had to go over it a couple of times to make sure it was fully closed, but once it's sealed, it holds tight.
The real magic is the air removal. Using my vacuum, I got the bags completely flat in under a minute. It's so satisfying to watch all that air disappear! I've already reclaimed about half of my closet space. If you are looking to organize your home and save space, don't hesitate to buy these.