ZRLEI400cc Oxygen Absorbers for Food Storage - 100 Count (20x Packs of 5) - for Long Term Food Storage & Survival, Mylar Bags, Canning, Harvest Right Freeze Dryer, Dehydrated, and Preserved Foods

Freshness: aint no smell, so im guessin its fresh.Value for money: not gunna find this much anywheres but amazon. Still mad about having to buy stuff to keep the bad air out my stored beans ( chem trails, google it)Durability: I was able to chew on one for over 20 seconds before it busted ( hehe thats what she said) so I'd say these little suckers are pretty durable. Be warned though they are pretty good and get addictive. Would suggest a monthly delivery schedule.

Good product

Yes O2 is about 20% of air. These are fake though or just very inaccurate. These are much smaller than any comparison. That is why they are so much cheaper than any competitors. This is a waste of money, unless you just want your customers to think you care about freshness. I unfortunately have been buying these, but I was always suspicious about the price. I had thought I just caught a sale. No they are always priced that way. They are about 1/3 the size of a competitor. They probably absorb about that same amount of O2.

Received the product perfectly packaged and haven’t got to use them yet. I’m hoping to store some dried beans and rice long term in mason jars. These will help with the preservation of these items.

I'm suspicious of the size so I've been doubling up just in case. I wish they had an oxygen sensor tab thing with them, but I realized I could use one from another brand and see it go from blue to pink so they're good, despite being initially worried with how they felt (more firm) compared to other brands. Overall probably worth it for the price.