I have used many different types of ‘space saving bags’ like this over the years, and these have been superb to what I have used in the past.Roll-up bags tend to only keep their vacuum seal for a short period of time. Those are ok to use, if you don’t need them to be airtight for more then just a few hours, but can be a pain to use.These vacuum bags worked GREAT! They kept their vacuum seal for over 2 weeks before I opened them.I like the double seal, and I also like the screw on vacuum pump. It worked great to keep the pump on the bag. Yes, it’s a pain to have to also pack the pump, BUT it takes up little room, it’s lightweight, and works great when the time comes to re-seal your bags. Perfect! Highly recommended.These sealed well and the air suctioned out ok. Not as tight as if you use a vacuum cleaner, but good for travel, which is why I bought them. They only seem to work for 4-5 days and then the air leaks back in. However, for travel that is sufficient. All of the pics seem to get the bag to lie flat after suctioning...mine is not at all flat so not as good for packing.I was only able to use one of these (small) as they are MUCH too large for travel, but given the price I will see if I can give the rest away to someone who lives in a space with limited storage. Once the vacuumed bag is placed in a confined space, they should stay sealed.I am ordering another pack of 6 small so I can finish packing into one medium suitcase for a cold weather trip!So easy to use. The added pump makes is wonderful because you don’t have to pull out you vacuum clear to use these bags. I was able to clean out my summer wardrobe and have so much space left to hang up my clothes for cooler weather.These could be great for traveling because you could pack so many extra outfits in your suitcase.Can't wait to use this in my mext travel! The pump doesn't look that sturdy but I tried it with the bag and so far it works fine. Hope this lasts though!Minor complaint, mostly user error: didn't notice a hair clip of my spouse's on the table, and it punctured the bag with moderate force; easily avoidable, but I've got ADHD haha.Positive Reenforcement: My toddler spiller an entire cup of water on one of the bags, and not a single sign of leakage when checked. I've opened and re-suctioned one of them a few times, and it's still holding the water and air out very well.The package came super fast and I am very pleased on how they work, I had to ship a quilt and two pillows in the large bag I got the quilt and one pillow and then the medium bag I got one pillow. It comes with a little pump but I did not use that I attached it to my vacuum cleaner which is much faster. I would highly recommendI loved how much space I was able save using this product. The suction pump is like the thing you use to put air in a basketball. It is easy to use but it does take a long time to suck all of the air out of the bag.Make sure you lay the items flat inside of the bags for best results. I switched over to my vacuum instead of using the pump providedBought this product to help make moving a lot easier! Only rated four stars as a few of the bags lost suction, and they’re a little hard to store after you use them.