I just received this item and was very skeptical about the shipping. It's made in China and that's the only bad review I can give. Bags are so tough that you can find many, many uses for them as long as they don't become brittle with age. I'm currently in the TEST phase, so I'll update after a few weeks of use. I was skeptical that "hand pump" would be the first case. No, that is not so. It works great and in just a few steps (not 2 or 3 minutes). just 15 seconds or less. The bag looks like factory filament packaging. The test will be how long it holds the vacuum. I will update later. so far very promising. Hope for great long term results. Update: After using these bags for a couple of weeks, I found one with a small hole in it. I wrote to the seller - Ataraxia, and he immediately agreed to send a replacement. I found out that this is a family business here in the US and they sell pretty good filament too. I studied the reviews of the thread and bought 3 rolls. So I'll do it again soon. But for now I recommend filament bags!
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