3D Filament Storage Bag Vacuum Kit, Spool Storage Sealing 10 Bags for Dust Proof Humidity Resistan, Keep Filament Dry for 1kg Spool with Sealing Clip

One bag out of the pack wouldn’t stay sealed so I can’t complain at all. The rest keep the moisture out and and keeps filament or whatever you may add dry. Comes with labels and a moisture reading card and silicone packs, I’ve purchased 2 packs now. Great value for your money and a must have for 3d printing

The bags and vacuum pump work perfectly, but the humidity cards are a joke. I kept one under an A/C vent, another outside in 80% humidity, and another soaking in a glass of water. None of them turned pink. You can buy working ones from Dry and Dry.

I purchased the Domsanistor Filament Storage Bag Vacuum Kit. The bags have a strong zipper seal to help keep my filament dry. These bags can easily accommodate standard-sized spools of filament, and they can be reused. I will definitely purchase these again!

Arrived extremely well sealed and packaged. Price was right on and quality of the bags is what I consider very good. The bags feel durable and I have 3 rolls of filament vacuum sealed with no issues after 24 hrs. Of course time will tell if the seals hold but for now I am pleased with the quality and purchase. Simply follow the instructions provided with the bags for sealing the top with a clip and expelling any excess air from the seal port on the bag. I also like that the package arrived with dessicant usage sticks so that I know when I should replace the dessicant packages.

Wow, this is the best storage solution I've ever found for my 3D Printing filament! Initially I just bought the bags because I was sure one of my vacuum pumps would work just fine. I eventually did try the electric pump they sell with this product and I consider it an essential item for best results.I have been amazed by the compact size, one hand operation, rapid pumping rate and ease of use that the electric pump provides. I highly recommend this product.I have seen some reviews indicating that the quality of the bags is inconsistent. Personally, I messed up a couple of valves on bags when I was using my own vacuum pump with an adapter I made. I have only tested about four bags since I started using the electric pump that is designed to work specifically with that valve and all have performed flawlessly.The humidity indicator cards are suspect because they never turned any color except "quite dry" blue. Seriously, after breathing on them, holding them in my hands, etc, I finally ran one under water just to see if it would change color. It did but I threw them all away. I have plenty in stock that I trust. The bag and pump system is amazing and that is all I would focus on.

I bought a kit that came with these same style bags. They worked great and I had very little issues with them. When I needed to get additional bags but without the pump is when I found these. I wish I hadn't, virtually all the bags I got lost vacuum within 24 hours.Some of the bags had damaged seals that couldn't be completely sealed, but most would just slowly fill back up with air without being able to find a hole or issue with the seal.I always pushed down around the vacuum hole after using the pump to ensure a good seal, still most of these ended in the trash. I now have an area I put freshly vacuumed bags to wait 24 hours before going into actual storage. Too many times I pulled a bag out and it lost it's vacuum.Sad part is because these look identical to the other ones I bought that are way better, I just need to slowly find all these bad bags.One last thing to note, on the GOOD bags I got outside of these page had a pop when the vacuum started. These don't, they just loosing air as soon as you apply the pump. I think the vacuum seal on these is what's busted.

Only 3 of the 10 bags had the air valve on them making them unusable. Had item replaced by Amazon and replacement had all 10 valves. Ordered an additional 10 bags only and all had valves but the "humidity" strips were missing (they don't seem to work anyway as I've had a set of them sitting out for over a week and they never chamge colors).Otherwise they are easy to use and seem to hold a seal well as after a few weeks I've not seen any bags lose their vacuum.Increased from 1 star to 3 as while it may have been a legitimate fluke, receiving original order with 70% of product having manufacturing error seems exceedingly excessive and easily avoidable.

Update: I've had more opportunity to use this and while the bags seem to work well and hold the seal, the pump is the downfall of this package. It is very difficult to get sealed on the bag to actually start removing the air. Once it is on correctly then it works, bit getting it on right can take awhile. I would probably look at the other pump styles with the extended clead section, maybe they would be easier to align right.Original: I got this try and help keep my filament dry since I don't use the printer very often. I figured it could work well for some other things that the bags would be just the right size for. The pump is not fast at all. I reduced 1 star because the EBL rechargeables that I use for everything are a very tight fit and difficult to get out of the pump.I reduced it 2 more stars because anytime I key up one of my amateur radios on UHF it turns the pump on. My radios are in good working order, and multiple radios cause the issue even at low power if I'm within about 6 feet or so of the pump sitting on the shelf (I haven't tried from further). This is a poor design for the electronics in the pump. A simple push button switch would have been better. Luckily I noticed right away rather than letting the pump run forever. Now I have to take the cap off and/or batteries out when it isn't actively in use for fear that it may just randomly decide to start up.