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JSSD79
> 3 dayThese are not at all as thick as they claim to be. Definitely not 3.15 mil, not even 2 mil. The only reason I’m not returning them is because I need them immediately and don’t have time to wait for a new shipment. Be aware, you’re basically buying thin sandwich bags.
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Heather
> 3 dayI got these bags with the intention of using them to store wax melts, and the first ones I stored had all the scent leeched out from them in THREE DAYS. So not only are these NOT as they’re advertised, but it’s also completely ruined other products because of it. These are polyethylene bags, and are not smell proof and WILL destroy any melts you put inside them.
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David Bosco
> 3 daySave yourself the trouble and buy a different bag. These are so thin you can’t open the ziplock without tearing the top. Maybe 1 in 5 you’ll get open. Absolute terrible quality
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Aurelie Herzog
> 3 dayThey are NOT 3.1 mil bags. Only 1 mil thin bag. Totally not as description! Return!
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OldChemE
> 3 dayThese bags are very light weight plastic. My caliper measures 3 mil for the outside of the bag, face to face, so material thickness is 1.5 mil, not 3 mil.
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Robert
> 3 dayBags are not the thickness as mentioned in the description. Some bags where sliced and unusable. The zipper is very difficult to open and many times the bag tears when I try to open the bag to put something in it. Also there is dirt around the bags like they fell on the floor and then got bagged . Not buying from this vendor anymore.
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little iberian
> 3 dayThe bags are ok, fairly thin but will do the job. They are sent in one large bag; not divided into smaller sections of 100 bags each. They had to be counted out into groups of 100 for our use. Not a problem for some purposes, but just wanted to share this as an FYI.
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G. Fastabend
> 3 dayThese are NOT 3mil bags. Thin as sandwich bags and not as advertised
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Sam
Greater than one weekThese might bet 1 to 1.5 mils, but definitely not 3.5 mils thick. The seller is selling substandard product passing it off as something more. Ziploc freezer bags are 2.7 mils and these are significantly thinner. The lip to open the bag is extremely narrow compared to any other plastic zip top bag ive handled. Overall, I would not buy again and cant recommend due to the false thickness.
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Paul C
10-06-2025The industry standard for measuring plastic bag thickness is to measure the thickness of a single layer of the bag. In other words, the thickness of the bag is the thickness of the sheet that it is made from. Joybest has claimed that the bags they sold me are 3.15 mil (which would be .00315) because if you measure the two layers of the bag, its .00315. However, they dont even meet their own made-up standard; two layers of the bag measure .00245 (.0017 per layer). I have a supply of bags labeled 2 mil that measure .0027. Theyre over twice as thick as Joybests 3 mil bags. What they have done is advertised a 3 mil bag and then delivered a 1 mil bag. When confronted, instead of offering a refund, or to bill appropriately for 1000 1 mil bag, they came up with this ridiculous defense. Im not going to waste anymore time on this. Its $40 and Ive already spent far to much time on this.