Electric Portable Air Purifier Masks, Air Supply, Easy Breathing, with HEPA Filter, for Dust Work, Painting, Machine Polishing, Welding, and Other Occupational Safety.

This product is a life changer for me. I have to avoid all sorts of air contaminants. This mask has positive pressure produced by a rechargeable fan with a HEPA filter. This is perfect for helping to avoid dirt, dust and other things you don't want getting into your airway. I was surprised at how the gentle breeze the fan produces makes breathing easier. This is so much better than wearing a k95 or kn95 mask alone. It is definitely a five on the five scale.

Outstanding mask! The fan makes breathing so easy, even in high humidity. I’m in the process of cleaning out the family house to sell it. These days, we have hot weather and high humidity, every single day. I’m working in a very enclosed space with a lot of dust and this mask performs wonderfully!

The machine is great, it has worked wonders, and thankfully hasn't malfunctioned, my unit came sturdy and without error, I'd still be cautious, though. It doesn't warn you when it shuts off, I've personally never really had issues with the fan speed being too slow but again, mine came in flawless so it's probably an issue with different units, the hose does kink sometimes, but if you're gentle and mindful of it, you won't really run into too many issues. My current living situation isn't great and there's a lot of mold I can't reach so I've had to resort to buying different PAPR devices, and the HEPA filters that come with do actually work, good protection. I will say, the masks that come with the machine aren't that good, not only are they thin, they also fog glasses easily. I'd recommend just tracing the hole of those on a different mask and cutting that hole so you can attach the machine to it.

Overall you can't expect much given the price. It does it's intended job well but a few considerations for improving build quality would warrant a price increase. Pros * Easy to use and assemble * Has a good battery life on the low setting ( which should be plenty of positive air for most people ) Cons * Arm band is useless with the placement of the velcro on the strap. You can't sinch it down to anything * Air tube is flimsy and kinks easily. 1/2 ID anti kink coil or better air delivery hose needed. * Rubber smell is strong when first turning it on, suggest letting it run a cycle to air it out before actual use. * Included masks could have use bands for going around the head instead of just ear loops for a more secure fit. I can't attest to the validity of the kn95 stamp on the mask without third party testing so I wouldn't put much faith in it without a certificate showing that. But, being a positive displacement apparatus that might offset it...a little.

We wore these during the awful smoke from the forest fires this summer and they were absolute life savers! I've recommended them to quite a few people.