My new go to bags for emergency food pantry storage my friend recommended them to me She said these bags are the best for food storageEasy to use, love that they're resealableI love how many I get for the price!Hefty, sturdy bags! The perfect size, too. I was able to place a full, 5-pound bag of flower inside of it, with plenty of room at the top to zip and seal. A conventional clothes iron did a super job to seal. No need to buy a vacuum sealer machine!Really fast shipping, no communication needed, arrived quickly and is of good quality.If you simply want a more bug proof zip lock bag then this is fine. But the whole point of a sealable bag is lost on me with these because you cannot vacuum them. They are so thin, they stick together and collapse on their self, making vacuum impossible. If you add oxygen absorbers you are increasing the cost of already expensive food storage. And at the rate of inflation these days, who needs that? I bought these expecting to be able to vacuum seal dry foods for long term storage. I am extremely disappointed.I liked the idea of gusseted. Easier to fill and liked the idea of resealable. BUT...I sealed these bags with rolled oats in them using a chamber sealer. They sucked up nice and tight. A few days later I was going to seal the buckets I put the bag into and found they were no longer sucked tight. I ended up cutting them open and sealing in regular mylar bags and and some in #10 cans (I have a can sealer). Pretty much a waste of money as I don't dare use them for anything now. If it doesn't suck up tight and stay tight with a chamber sealer, then they are letting oxygen in. I am aware they often don'e suck up tight when using Oxygen Absorber's, and yet the "experts" claim they have the oxygen removed without being tight, but I will. never know if they seal or not using OA's. They sure didn't with a chamber sealer! Won't buy releasable bags again!! At least not from this company.gussett only 3" - website states RESEALABLE STAND UP ZIPPER POUCH BAGS : These mylar food storage bags are designed with a 4.3" gusset to standup right.