30pcs Filament Storage Bags Light-Proof Vacuum Storage Kit with USB Pump, 3D Printer Filament Vacuum Sealed Bags for Keeping Dry, Plus Size 32X34cm

The bags work very well. I bought the 20 pack and had zero bag leaks. The pump didn’t draw much power, and is amazingly quiet. It seals real well. Just be aware that you need a USBA power source. The pump is not rechargeable. You connect it to the USB power source via the cable connected to the pump.When you seal your filament ensure the tip is toward the inside of the reel. This will avoid the sharp edge of the tip from puncturing the bag immediately, or over time.The only negative thing I can say, is that you cannot just buy refill bags. You have to get the whole kit. Seems like a waste of resources to have to keep buying the whole kit when there’s nothing wrong with the pump.At the time of writing this review, the 30 pack is the best buy for your money. It comes out to 1 USD / bag, which includes the pump.One last important thing to know after a few years of experience, is to ensure you completely zip the bag closed. This might sound obvious, but it is real easy to have an almost unnoticeable bump. The bag will seal, but when you go to take the reel out of the bag weeks or months later, you will see that it is not sealed anymore. Either use the provided clip to seal the zipper, or lie it on a flat table and slide across the sealing area with your finger. Do this a few times until you don’t feel the bumps anymore. This is true of all these type of bags, not just this brand.To sum it up, I highly recommend this pump and bags. I’m getting ready to reorder the 30 pack today.

I REALLY REALLY love this kit. I have a few hundred dollars in filament just sitting around, and this gives me peace of mind that my filament is safe. My spools are 1KG, but there's still space inside after I seal them, so you could put more in there. The bags feel sturdy, and I've never had one fail. And the vacuum sealing process is easy and straight-forward.

Bags: 5/5 EDIT: 4/5Pump: 0/5 EDIT: 3/5EDIT: The issue with the pump was the USB-Plug adapter I was using. Since the pump does not come with its own plug, I had to use an iPad adapter I had. It worked for 5 bags, then the pump wouldn't turn over after that even days later. I assumed it was the pump, as the adapter worked fine with the iPad still. However, before tossing the pump in the garbage I gave it one last try by plugging it into my PC's USB-C port, and the pump worked again. I don't know why it would work at first with the iPad plug adapter and then suddenly not work, but it seems to be working again.I see in the video description that it is supposed to come with a sealing clip (which WOULD be nice actually), but mine did not, so I have added stars for the pump, and removed them for the missing clip. If the vendor would like to send me a clip, I would re-add the stars for it being missing from my package.Original Review:I used the pump for exactly 5 bags spread over two days, and it died. Seemed to work well, until it just stopped being able to “turn over”. You can hear it trying, but the motor just won’t run anymore. Junk.The bags seem decent, I like them.

Ive use many brands and have had various levels of success but this one got everything right. The thickness of thr bags is perfect. No worries that youll pop them or have them inexplicably split on you. The dark color bags makes your fillament color pop making visual identification a breeze and the label markers on the bag make for easy notes.Where this shines is with the pump! The pump is a hard wired USB / USB c plug. Its powerful! All of the other pumps ive used from plug ins to battery pumps are weak and when they over heat they stop working. This pump was able to complete all 30 bags in a row. It took less than 1 min to suck the air out of each bag. Noted towards the end the pump did get physically HOT not warm hot. I was able to use gloves to keep going but the best part is the pump never slowed down and kept working. Very impressive! I enjoyed this pack so much I orderd a 2nd to keep around.

Well, I reviewed these not long ago when I first received it because I really think it’s a slick idea.With tons of 3-D filament spools that I need to keep out of the humidity. These bags just fit the bill. I’m not sure if these were meant to be for long-term storage or both that and continual opening and then resealing but so far in the short period of time that I have them they’re definitely not a short term product.Many times I open filament use it on my printers and then have filament left on the spool so then I need to reseal it in the bag.Then at some point it could be a day,two days it could be two weeks or a month later I need to reopen it use it again and sometimes there’s still some filament left so then I’ll reseal it for a third time.What I’m finding now once these have been used a couple times I’m starting to get a ton of failures on the bags.The little vacuum pump works great and that I feel is a fantastic invention. The problem is they need to do a better job with the bags. Mine started with one bag started leaking than two then three I now have six or seven bags that will not hold the vacuum for more than a minute or two.There are no holes in the bag and I am sure the seal has been properly closed, so I’m guessing that it must be leaking through that seal or the valve for the vacuum pump.Either way when I first got these I thought they were a good purchase. Not sure if the spools I have vacuum sealed that may be on the shelf, a long time will hold their vacuum, but I can guarantee that the ones that I’m using short term opening the bag and resealing it opening and resealing . They’re all gonna start leaking so if you’re needing a short term solution like that go somewhere else because they will fail, unfortunately I had high hopes for this product and now I couldn’t recommend it to anyone.

This is the real deal, the vacuum bags actually work and come with a pump that is easy to use. I've used cheaper vacuum bags previously and they never work right. So far I haven't had a failure with these bags. I transferred all my PETG and they seem to be keeping it dry.