Plymor Heavy Duty Plastic Reclosable Zipper Bags, 4 Mil, 4 x 4 (Pack of 100)

I bought these to store small LEGO builds form an advent calendar. They are PERFECT! Sturdy and large enough for the legos and small enough to store efficiently. This way I can get rid of the big advent calendar box they came I highly recommend these!

Size was right on, product had two different top profiles, one easy to re-use, one not

Love these! They are very durable and the right size.

These are made of high quality plastic. Very durable and worth the money I spent.

First order of this product after using other plastic bags of various sizes and closures. I like this item very much - It is a sturdy small plastic bag with easy to seal, tight zip-lock type closing. Excellent for small items and parts that need to stay together.

Bought these multiple times. Very happy with them. The 4 Mil thickness is a must have and can’t be beat for durability when storing small parts and items. Most bags are 2 Mil where these are 4 Mil.

Best plastic bags for packaging my Etsy stuff. Ive also used them to organize board game pieces. Highly recommend.

I use these bags to store individual bracelets and necklaces. They are thicker than most . . . theyre great!

Excellent thick plastic that can be reused again and again. I use these to store powders and coffee when traveling or hiking.

I purchased these bags from Collecting Warehouse. I use these bags in my workshop for small quantities of hardware parts - nuts, bolts, washers, screws, etc. While I cannot comment on whether these bags are 4 mil, I can state that they are significantly thicker than the name brand zip lock sandwich bag. They are similar in thickness to the zip lock quart size freezer bags. I have no trouble opening or closing the bags as some reviewers have described. Just to be clear, I have VERY large hands, so you would think if there were an issue I would have encountered it. I was impressed with the packaging as well - I purchased a bundle of 500 bags. These came in five 100 bag zip lock bags that were clearly labeled as 100 Bags - 4x4 4Mil. This was very handy as I also ordered some 3x5 bags from the same company (I was equally impressed with those and wrote a similar review). The bags measure right at 4x4 in the usable part of the bag (which excludes the zip lock). You could put a 4x4 paper card into the bag, but it would be difficult and you could not put more than a couple inside before the bag was completely stuffed.