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Why did this mask fail?


Video Transcript Hey, everyone. Welcome back to the place we're testing every single mask on Amazon, even those were some are free. That was a joke. Not sure it landed. Let's open up the clamper and see what happens. This is a KF 94 mask and I will say it does look like a legitimate KF 94. I think I've only had one legitimate KF 94 ever fail on me, so that's a pretty good standard. If I were to bet, any one of these masks, any standard, if I was just have to buy a mask at random, I would try to buy a KF 94. Because if I didn't know any better, I would trust that.

This is a PFE machine, particulate filtration efficiency machine. We are doing the N 95 test for KF 94. It's roughly similar. Should pass that 94% and we shall see. Let's take a look at the packaging here. They come all separate like this. Sumfree Health Mask, KF 94. Protect you from fine dusk and infection sources. So I find that... So all legitimate KF 94s are made in Korea. They have to be made in Korea. So I find that typically they do have Korean writing on the mask. They also have this like really nice packaging that has a... It's called a barrier bag and that's not going to let smells or anything else in, very expensive to do that. So take a look at the listing, 412 ratings for their protection, 100% made in Korea, 100%. This guy looks very protected. Certified KF 94 by the KFDA, which is the Korean FDA.

Let's open this up. Very strong. Very, very strong. It's like breaking things so I got to push it to the limit. You know what I'm saying? One more time. This smells a lot like most K 94s, which is like, I'm going to call this one, what did you drop in the fire? It smells like a campfire that you put like some sort of plastic thing into this. One's very big for my face. I would choose a smaller one, personally. But let's see what the test said. I haven't looked yet. 99.143, 99.143. What was the breathability?


211 pascals, a little high. There are KF 94s that are a lot more breathable than this one and probably choose them. And if you had a really big face though, I would choose this. I have a pretty big face. This is too big for me. Maybe they make a small. I know all the KF 94s come in different sizes. Overall though, 99.143 is a pretty good score. Breathability, a little high.

All right, guys. Thank you so much for watching. I appreciate your time and attention. We're doing a new test every day at 10:00 AM. I'll see you there and do yourself favor, write a comment below. You could win something. Talk to you soon.


The Sumfree KF94 mask passed our particulate filtration efficiency machine test with a score of 99.14%. KF94 masks are boat-style and made in Korea, which has very strict production guidelines. All KF94 masks have ear loops instead of head straps or head ties.

Mask breathability is determined by airflow resistance, which we measure in pascals. The target for adults should be around 150, and the target for children should be close to 100. The airflow resistance of this mask is 211.

This mask has an odor similar to wood smoke. The breathability is also more difficult than what it should be for a KF94. Most should skip this mask, unless you have a larger face and need appropriate coverage.

We found this mask on Amazon. Check out our video review for more details.

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1 comment

Can you help me find theKF94 Sumfree mask you reviewed?

Bob Blazer July 29, 2022

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