Smart Design MagicBag Flat Vacuum Storage Bags – Large Size, 12 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 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.

Bought 12 medium bags. Of the first six I tried to use only one would seal. They leaked at the vacuum valve. Used bags my wife had for years that were same size bur different manufacture and they all worked perfectly. Don't know if I just got a bad batch but these were worthless.

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...................

I put baby clothes in these. Nothing hefty and never over the suggested line. I ensured the bag was closed well and used my vacuum to seal shut. Only lasted for a couple days on 1/2 of them. I’d expected better. I would prefer half the price since only half the product worked.

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.