Smart Design MagicBag Flat Vacuum Storage Bags – Jumbo Size, 8 Bags – Space Saver Vacuum Storage Bags with Airtight Double Zipper for Optimal Home Organization and Storage

They have not leaked air at all. I did not have a vacuum attachment, so I sat on them and pushed the air out. (Well, it worked)

Ive been looking for vacuum bags like these that actually work for a while. I first tried hefty brand and while some bags did work great, every 1 out of 3 or so just leaked air. So far, out of the 13 ive used from this brand, only one had a problem with leaking air into the bag. Overall Im satisfied.

These bags are huge! I mean huge. I was hoping for big but wow, nice! I put a king-size comforter AND king size quilt in the bag with some room to spare. When I went to seal the bag, the zipper to seal the bag fell off immediately when I tried to zip it. But I was still able to manually seal the bag. I tried to use my vacuum to suck the air out, it did not work very well; not a proper seal. So I put the hose through the side of the zipper seal to suck the air out. That worked. I had to be quick to pull the hose out and seal the zipper. So I had two king-sized blankets nicely condensed into a small area; probably more than a quarter of what the two take up otherwise. After about a week, I could see that some air had gotten into the back; it was expanded slightly. I do like the bag. Great size! But I am not sure if it is 100% sealed.

These bags are great. They open easily, and seal easily. I had a problem with the zip glider on one bag, but that was my fault. Don't overstuff the bags. They are clearly marked, and it's best to honor that mark. It allows for maximum air to be removed. These are the best vacuum space saver bags I've ever used.

These bags are designed to hold pressure so your contents have all the air removed from them and therefore take less space. Well, THEY DO NOT!!! 2-3 weeks after you store them they are right back to normal size.I'm finding this is true with all brands regardless of price, none of them work.

We purchased this product to see if we could use it to ship bulky items more cost effectively. We performed a test of the box of 3 medium bags to see how long they would maintain their smaller size as we can't use them if they inflate during shipping. Following all instructions, in one bag we placed a blanket and in the other 2 we placed pillows. There was an immediate failure on one of the pillow bags - it wouldn't hold the suction for 30 seconds. We attempted several times with only 1 small pillow and no luck - bad bag. The other 2 bags held the suction and were gently put aside to see what would happen. In less than 24 hours the blanket bag has failed. The pillow bag still has suction but failure of 2 out of 3 in the first 24 hours is shameful quality control. These bags were not stress tested. They weren't overfilled or manhandled. They just are very poor quality. We definitely will not use these in our business.

I bought 4 boxes of medium size vacuum bags (3 bags in each box) to store wool roving and protect from bugs. I've use larger vacuum bags before with no problem. Yesterday I decided to start filling and store my wool. I used 6 bags. I did not over fill bags, sucked out the air slowly to make sure there were no creases and the bag and contents laid flat. This morning when I got up, I saw 4 of the bags lost their seals and fluffed up. I just looked now and all 6 bags lost their vacuum. It's not worth my time and money to send these bags back. I wasted $20 on crap bags...................

These bags are so flimsy. The plastic is not a strong plastic at all. 2 of the 6 bags never did hold the seal. Must of had a pin hole somewhere. I had one bag RIP and I tried to tape it with Gorilla tape but the rip just ran like a crack in a windshield. I will never buy these bags again. Love the concept just not these particular brand of bags.