It does the job, but the instructions were terrible – just poorly translated English with unclear diagrams. I had to watch a YouTube video to figure it out. Once set up, it's fine. Seals my fishing fly packets well enough. Just be prepared for a frustrating setup.

It works, but it feels a bit cheap and flimsy. I'm using it for craft items, so it doesn't need to be industrial, but I don't think it would last in a real busy environment. It's okay for very occasional, light use. You get what you pay for.