5.0 out of 5 stars Less Interior moisture than the standard mask

A.V. · February 3, 2025

(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } I used these while doing heavy physical activity as the pandemic was starting to wind down and there was a noticeable difference in how much less moisture would accumulate inside the mask with these. My face was definitely happier to be less damp. I never had any problems with the seal closing up either. Great if you are healthy and just need to protect yourself from airborne virus and particulate. Just make sure you don't use these if you are the one that is sick because they release all of your exhalations into the environment and wont protect those around you from anything you have.

5.0 out of 5 stars The most effective mask for pm2.5 super fine particulates!

F. · November 21, 2013

I wanted to find the best mask for the terrible air pollution in Beijing China. After several days of research, I narrowed the choices down to 3 brands: 3M 95N, Totobobo (Singapore) and Respro Techno (UK).pm2.5 refers to particulates smaller than 2.5um (A hair's diameter is 30 times of pm2.5). They are extremely harmful to lung and heart as they can penetrate deep into the lung and blood. 3M 95N stands out in terms of its technical superiority. It can remove 95% of super fine particulates (down to 0.3um). In comparison, totobobo does not filter out as many particulates according to a fit test done by Hongkong University, and Respro can only filter out particulates down to 1um (according to the very little technical spec.on its website).Any of 3M 95N has the same technical ability to filter out fine particulates. So the key is to find one that fits the best and wears the most comfortable. A basic one would be 8210V (V stands for breathing valve which lets the moisture out). 8511 is a step up that has better elastic band and a bit more rigid form. It is more durable than 8210V.I find the best to be 9211+. It is fold-able and individually packaged (great for travel or storing away). The nose band (made of foam) runs across the whole length. When formed around the nose properly, it provides a very good fit to the face. The mask fits both my husband (Caucasian) and I (Asian) very well.Understandably, the air flow is reduced while one wears the mask, but I don't find the mask overly suffocating or hot to wear. I am willing to sacrifice some comfort to protect my lung. Since I own the mask, I finds it also to be quite useful when doing some house cores.In short, I highly recommend it particularly if you are traveling to countries with bad air or working in a very dusty setting!Update: I recently spent 2 weeks in BJ and wore 9211 daily. It had a snug fit to my face and felt comfortable to wear. In comparison, 8210V is less fitting and also its rubber band less comfortable. In spring, air quality is better than the heating season. Still I found that the mask became blocked after one week and I had to replace with a fresh one.

4.0 out of 5 stars Good value for the money

A.M. · May 19, 2025

Good value for the money

5.0 out of 5 stars Still The Same Size As The Earlier 2017 Model 9211 Cool Flow Mask

S. · January 22, 2024

I bought in 2017 and 2019 a bunch of the 3M 9211+ Cool Flow Masks. Still have some around. While they are twice the price I paid in 2019, the 2024 9211+ mask I just bought here is the EXACT same size as in 2017. My face is a medium size and my hats are 7 1/8 size. So it must be folks complaining about the mask size must have Large faces/heads or XL face/heads.Having said that, I do agree with others that the straps are short (about 9" long) and very tight, just like the 2017 and 2019 9211 masks I have. This can be fixed by following these steps:1. Go to Joann fabrics and buy a few yards of elastic strap the same width as the existing ones.2. Remove the staples on the mask using a needle nose pliers and a thin screwdriver.3. Sew on and Size the new elastic strap so its larger so to fit tight but not too tight. Mine measure about 12", an increase of 3" over the original.4. Voila, you have a comfortable fitting 9211+ mask!

3.0 out of 5 stars Well, they work but come with some fit warnings (from me)

N.H. · May 1, 2022

This is an n95 (with valve) and typically, is just used for sanding and industrial use. So don't buy it for pandemic purposes! Get a non valve kind.- The problem I founding with it is that they are quite small and VERY tight. I have a big head (largest and then some hat size) and a migraine disease sensitive head so, it was unbearable after 15 minutes.- I found the Kimtech pouch style to be much more breathable than this one with a valve! The heat in this was just too much and concentrated in too small an area. The bigger Kimtech allows the heat to spread out more. So, no valve is needed.- They also smell terrible!I called 3M and, got a lady who knew her masks! She said, air it out overnight. It is all fresh and new batches being made now so, you have to take them out of the plastic and air them out. No old stock at all anymore.She also said, consumers should buy a small pack to test out first. She said the moulded cup style might be better for some. I have used those in past and, they are better fit but just as hot.I also asked her about expiration dates. Mask material does not expire. But the foam and elastic strap rubber do go bad. So the date is a will-last-by date. Past that, it is a gamble depending on storage location, heat, etc.Ultimately, these are a total fail for me. I am sticking with the Kimtech as it is an N95 NIOSH, not so tight, not smelly, and cooler on face (relatively speaking).I gave it three stars because, maybe a smaller head and face (petite lady, teen, child) in a colder climate, for sanding, this would be ideal.

5.0 out of 5 stars Great Masks, but only got 7 out of 10 in an open box.

C.C. · March 11, 2023

The masks are great but perhaps a bit pricey. You can really feel the seal when breathing out when the valve clicks.However, I had an issue where I only got 7 masks instead of 10 from an open box - Someone is probably buying them, taking a few out, then returning them - so I looks like Bolo isn't doing due diligence with their inventory returns, or perhaps someone in the warehouse is filching them from time to time, so that's why I lowered the value for money rating. Customer service was really helpful though.

5.0 out of 5 stars Fit well

B.W. · July 30, 2024

These work well but can be difficult to put on. They do work very well at keeping dust and dirt from getting into your lungs.

Great masks for grinding and welding

D.F. · March 20, 2025

(function() { P.when('cr-A', 'ready').execute(function(A) { if(typeof A.toggleExpanderAriaLabel === 'function') { A.toggleExpanderAriaLabel('review_text_read_more', 'Read more of this review', 'Read less of this review'); } }); })(); .review-text-read-more-expander:focus-visible { outline: 2px solid #2162a1; outline-offset: 2px; border-radius: 5px; } Comfortable masks. Light weight and don’t stick out to much especially with a welding helmet on.

Excelentes en tiempos de COVID19, se mantiene fresca la cara por el respirador.

N.E. · April 24, 2020

Excelentes en tiempos de COVID19, se mantiene fresca la cara por el respirador.

Nice product, related seller and fast shipping

M. · March 10, 2020

I liked the product very much. Fits perfectly in the face. Seller communication is good. And thank you for putting a gift inside. It came very fast. I'm really glad. See you next shopping ;)

Efficace

S. · November 26, 2024

Excellente fabrication et efficace

Wish these came in more colours

B.B. · April 3, 2024

I’d pay 20% more for a gray or tan or dark blue Aura mask with a valve.Other than that, the masks are great - good fit, the nose wire is durable and holds its shape, elastic bands snug the mask to face well — you can get away with wearing just the bottom one. Mask folds flat for easy putting away.3M: please make these in not-mega-bright-white; people have developed a political allergy to masks and it would be nice if these didn’t visually stick out like a sore thumb.