Zeberoxyz 5PCS 3D Printer Filament Vacuum Storage Bags moisture-proof Sealed Compression Storage Bags with Manual Air Pump, for PLA/ABS/Nylon/Wood/TPU/Other 3D Printing Material (Not Include Filament)

Nice Product and Worked as intended

Great bags and a perfect size for an average school. I would definitely suggest though in investing in an electric pump rather than this handheld one although it does get the job done. I haven’t had any issues with them on ceiling so far and I’m really happy with the results.

One of the big advances in 3D printing (for me at least) is how cheap and how much variety there is in colored filament - back in the day, everything you printed was black or grey and you hand to sand, primer, and paint to get a different look. Now I have over two dozen colors of filament on hand at any given time, from back to neon green to glow0in-the-dark. The challenge is keeping all those rolls of filament dry. I use these bags and some desiccant packs, and all my filament is usually ready to go, even after extended storage.

These bags are the right size. However, the pump and getting it to work right, just sucks. Or, well, it doesn't. Which sucks. Lol.You can get a foodsaver handheld electric vacuum sealer that makes it a lot easier. But most of the time, getting the stock pump to suck air out of the bag (which is a very small amount per pump) takes a bit of finding the sweet spot. I wish this used the screw on type pump instead. Those seem to work a lot better. But it's hard to find properly sized bags that aren't way too big, so they got that part right.