I sew for a living and make a lot of children’s neckties and bow ties for weddings and such and many other items so I use these mailer bags to ship them out and they work perfectly, never had a complaint about the bag being torn so they are sturdy although thin.perfect size for full atx motherboardWorked perfect for sending computer parts in for repair.Works great for storing open face and sensitive electronicsThese bags are great for motherboards and video cards due to their size. The quality of the bag is excellent and the reusable zipper seals tights. The opening of the bags is flush which makes it a little of a challenge to open, but that is not a negative in my opinion. The bags are thicker than I expected, so electronics will not poke holes in the bags. From my usage of these ESD bags, I would recommend them to buy.These are rather rectangular, I think they're pretty good for GPUs. But they're big enough to fit a variety of things. If you need bags this size, these seems just fine and are thick and resealable. Good for longer term IT storage.This is the perfect size for large components like full size ATX boards. These are really way too big for really anything else, so consider the size before you purchase. The lip on the opening of these are flush cut, no offset unfortunately, but for the price I can't complain. Overall, these are great quality and will help keep components safe from ESD.These are great for storing my electronic components safely. I really needed this for all my computer cards I had laying in a box before. Stop killing your circuit cards by zapping them with static electricity, protect them (and ground yourself too).