2021 Global Green Business Award Recipient

Best High-Performance Reusable/Washable Mask Retailer

Organic High-Performance Reusable ASTM F3502 Masks

Preferred mask of the American Federation of Teachers

Committed to 100% Transparency

Unicorn Mask Line
Unicorn Mask as seen on major news and publication media.

International Shipping

Free Priority shipping on $200+ orders (US). Ships from Los Angeles, CA

Free Starter Filter Sets

Each mask includes 2 filters sets (48hrs / $6 value!)
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100% Certified Organic Cotton

Each mask features high thread count organic cotton lining, soft and breathable.

Buyer Beware!

Mask companies are required to post their full pre and post wash panel F3502 lab results visibly on their website in order to be compliant to the ASTM F3502-21 standard. Click here for our USA-based Lab Report.



Kids ASTM MASKS (Ages 2-7)




"We are using them in return to work kits. I love them. I like the piece that goes over your chin. They are very comfortable for all day use also."

Faith Proctor 

Director, Administration & Infrastructure

American Federation of Teachers

Common Mask Complaints Solved

Comfort & Breathability

Unicorn ASTM F3502 Masks offer High Performance breathability at 5.9mm h2o tested to the new ASTM F3502 standard. The lower the score, the more breathable. Our CDC recognized ASTM F3502 masks allows up to 15mm h2o (the higher the rating, the more difficult to breathe). NIOSH certified respirators have two different breathability limits: one for inhalation, the other for exhalation. For inhalation the air flow resistance (breathability) for N95s is ≈ 35mm h20, more than double the maximum breathability resistance allowed under the new ASTM F3502 standard!

Unicorn Masks provide Comfort & Breathability.

6 Adjustment Points Solving Gaps & Leakage

Did you know that respiratory aerosols can accumulate the same way cigarette smoke accumulates, in a plume, allowing virus particles to linger up to 16hrs in a low ventilated room?

Featuring up to 6 size options ranging from adults to kids, with a total of 6 adjustment points in a contour design, gaps and leakage are significantly reduced, preventing these particulates as small as 0.1 microns from being inhaled. Most face masks on the market are a 'one-size-fits-most' or offer 2 adult sizes with only 1-2 adjustment points, leaving numerous gaps and leakage, reducing mask particle efficiency up to 60%! View our Manufacturer's Design Analysis here.

April 24, 2020 I Source: ACS Nano https://pubs.acs.org 

Unicorn Masks have 6 adjustment points and 6 size options.

Style & Fit

Unique design elements solving the common complaints of mask wearing.

Unicorn Masks unique design elements solve the common complaints of mask wearing.

"As a biomedical engineer scientist with focused research on nanotechnology for regenerative and translational medicine, I endorse the use of nanotechnology utilized by Unicorn Breathing Mask, specifically with the use of electrospinning nanofiber polymers to filter out particulates down to the 0.1 um dimension. This is crucial when providing effective filters for a breathable face mask as a barrier towards viruses like that of the coronavirus. This mask is capable of protecting one from viral particulates exposure due to its robust electrospun nanofiber innovation and recommended 3-ply construction."

Filter Protection

ASTM F3502 Highly Breathable Protection Masks

Award-Winning Nanotechnology Innovation

Face Masks remain the best defense against this and future pandemics including flus and natural disasters, however not all masks are created equal, and we must look ahead to safe and innovative technologies that will solve the concerns of long-term mask wearing. Previous masks have relied on protection basics such as 2-3 ply fabrics, and the use of spunbound or meltblown non-woven polypropylene or other synthetic woven filtration or antibacterial barriers for particle efficiency. However questions as to the overall consumer safety, comfort, breathability and protection over a masks lifespan is of grave concern, particularly in our more vulnerable demographic of kids, seniors and those with respiratory conditions or chemical sensitivities. 

Unicorn 3-ply reusable ASTM F3502-21 Level 2 Masks. High-Performance Barrier Face Coverings. Each wafer-thin replaceable mask filter contains 15 miles of proprietary sonic electrospun nanofiber matrix thousands of times thinner than a human hair, capturing particles as small as PM0.1  at 99% efficiency. Standard mask filters only protect down to PM2.5.

Unicorn Breathing Mask's wafer-thin replaceable filter contains 15+ miles of non-toxic proprietary sonic electrospun nanofiber matrix thousands of times thinner than a human hair, capturing particles as small as PM0.1 with 99% efficiencyStandard reusable mask filters only protect down to PM2.5. Unicorn Masks have a superior lab tested high performance breathability rating of 5.9mm. The highest (meaning least breathable) score permitted for F3502 is 15mm. NIOSH-certified respirators have two different breathability limits: one for inhalation and one for exhalation. For inhalation, the air flow resistance (breathability rating) for N95s is 35mm, more than double the maximum breathability resistance allowed under the new ASTM F3502 standard. Our filters are proving to have many benefits as endorsed by leading bioscientists, with its nanometer fiber diameter resulting in higher fiber surface area, reusability while maintaining electrostatic attraction, higher breathability with great thermal comfort (dramatically reducing any moisture build up), sustainable production efficiency at a lower temperature, and ease of fabricating from a wide selection of materials as opposed to limited thermoplastic polymers.

For more information about our advanced Unicorn filter innovation, click here.

Filter Safety

Is your filter safe, and will it fiber shed? How is it different from 'nano fabric' masks?

We utilize a very different technology from 'nano fabric' masks you may have come across in your research. In fact we strongly advise against the use of woven 'nano particles' in textiles, especially when combined with 'anti-bacterial' silver or zinc particles for health reasons. These materials have not been tested for use in face coverings and according to several scientific peer-reviewed articles, can actually be harmful to your lung health when worn for extended periods of time due to fiber shedding. Once these fibers are inhaled the lungs will not expel them out due to their small 'nano' size. These nano fabric textiles often come from China and South Korea. 

Unicorn masks on the other hand utilize non-woven sonic electrospun nanotechnology (as opposed to a nano embedded woven textile). Being a continuous fiber and not anything related to nanoparticles, there is zero risk of inhalation of anything harmful. The nano fibers are encapsulated by two substrate layers of polypropylene further protecting against any possible fiber shedding. Our filters are manufactured by a leading global nanotechnology company out of New Zealand that is committed to health and safety. Our technology tests down to a much smaller particle size with greater efficiency ratings than nano textiles, and features dramatically higher breathability, greater thermal comfort (far less moisture buildup) and is much more lightweight (less than 1mm thick) than nano textiles. We encourage you to do your own research with all filtered mask companies and note the differences in verified USA lab tested results. The proof is in the pudding as they say!

Why do you use Electrospun Nanotechnology instead of Meltblown filters found in N95 and surgical masks?

The following graphic demonstrates the CO₂ emission mechanism for both Meltblown and Electrospun nanotechnology filters. It can be observed that Meltblown filters exhibit poor emission as compared to electrospun nanotechnology filters. Recently, a survey reported on the risk of headaches to healthcare providers from wearing N95 face masks.[1]* They concluded that this is due to higher humidity levels, breath resistance, and accumulation of heat inside the micro-climate of the masks. Researchers found that Meltblown N95 masks provide a favourable environment for viruses and bacteria due to its moisture-loving nature.[2] On the other hand, electrospun nanotechnology filters have a finer structure and more uniform morphology and pore diameter. This allows the water vapour to be passed through the filter more consistently and efficiently. This is one of the many reasons why we have chosen Sonic Electrospun Nanotechnology to replace traditional Meltblown filters. For more information about our advanced Unicorn filter innovation, click here.

*[1] Lim, E.C., et al., Headaches and the N95 face- mask amongst healthcare providers. Acta Neurol Scand, 2006. 113(3): p. 199-202. 

[2] Balazy, A., et al., Do N95 respirators provide 95% protection level against airborne viruses, and how adequate are surgical masks? American Journal of Infection Control, 2006. 34(2): p. 51-57. 

Mask breathability transmission.

Evaluation of breathing comfort by infrared thermal camera ES NF and MB filter: (left) air and moisture transmission and (right) CO₂ transmission.

Mask Comparison

Did You Know?

Our oceans were contaminated with an estimated 1.56 billion disposable, non-biodegradable face masks in 2020 based on a report released by marine conservation organization OceansAsia. This resulted in an additional 4,680 to 6,240 metric tons of marine plastic pollution as evidenced in a report entitled “Masks on the Beach: The Impact of COVID-19 on Marine Plastic Pollution.” These masks will take as long as 450 years to break down, slowly turning into micro plastics that fish and ultimately humans will consume, while negatively impacting marine wildlife and ecosystems. We aim to fix that.  

"In what has been the ‘Decade of Action’ The Global Green Business Awards 2021 looks to applaud the essential innovation in corporate sustainability and seeks to reward those who have proven themselves to be pioneers capable of providing solutions to meet a vast array of demands."

Unicorn Breathing Mask has been awarded:

Best High-Performance Reusable/Washable Mask Retailer

Designed With The Environment In Mind

Our use of certified organic, sustainable inner and exterior fabrics and plant-dyes that come from conscientious countries that don’t spray their fabrics with toxic chemicals, is also a key differentiating factor that stands us apart.

The initial feedback we have received regarding comfort and fit is highly promising. In many cases essential workers forget they are wearing a mask after extended use! Foggy glasses are greatly reduced or eliminated, there were zero reported cases of claustrophobia or difficulty breathing, masks fit comfortably and snugly over facial hair without gaps, there is no slippage with strenuous activity, no sucking in of fabric when exerting heavily or talking, and there are zero reported cases of acne or skin chafing over 12 months of continual daily use up to 8hrs/day, 5 days/week. With a minimum lifespan of 25 washes, our masks are devoted to being a part of the Solution, saving our oceans and eliminating plastic waste. 

Discover how our plant-dyes are handmade

We are a women-owned company based in Studio City, CA, and all masks are lovingly hand-sewn by master craftswomen in Bali. Recently the American Federation of Teachers has entrusted us to outfit their employees. Kids heading back to school love the masks as they are comfortable, breathable and fit snugly, so they are not tempted to pull them down. Kids are also more sensitive to chemicals, making the high thread count undyed, unbleached, raw certified organic cotton interior highly favorable to their sensitive skin. We are a 100% transparent company and proudly display all of our wholesale pricing and lab testing on our website, so you don't have to track us down and ask! We also have a dedicated US based Live Chat Customer Service team standing by 6 days/week M-S, 17hrs/day to answer any questions. 

Simply put. WE CARE. A lot.

Based on 148 reviews
Best mask

Our whole family has a unicorn mask. Our 9 year old daughter has three and wears one every day at school. Hands down the best mask we’ve found, even before considering the F3502 rating. We have tried lots of masks, including another brand rated for F3502. Don’t wast your time if you’re looking for this rating. You won’t be disappointed with this one.

Best mask ever

This is a comfortable and excellent mask. I like that it has filters and that it cuts low below the eyes so glasses do not fog.

Most comfortable mask I have worn!

With the filters inserted, I am confident I am protected as well as comfortable. The customer service was very helpful when I had a minor problem with one of the masks I purchased. Thank you.

Great fit, great product

Excellent quality. Nice fit. Looks cool.

ICU approved.

Excellent quality. Holds up well. Fits well and is comfortable.
Definitely a mask to purchase and can use daily.

Great Product

I love the mask. It's sturdy and my eyeglasses don't fog from my breath. The filters are easy to insert and remove.

Fits like it was custom-made

My new mask fits like it was made for me! It follows the contours of my face, from across my nose to my ears and under my chin. Very comfortable.

Magical unicorns

Excellent mask, very comfortable, easy to wear for 12 hours at a time.
I actually clean mine using a steamer that works very well. Sky is wonderful to work with on all orders.
ICU staff loves these.

Comfortable and Assurance

These masks are very comfortable and their high quality also make me feel assured that I'm protected while out in public.

Lovely mask

Beautifully made, comfortable to wear, good protection!

This fits a big nose

Don't laugh. I've been having a hard time finding a mask that fits my big nose. Think Romanesque nose. (Look it up if you have to.) My big Romanesque nose is not a wide flat nose. It's different. The problem I've had is other masks leave a sizable gap below my eyes so I'm breathing into my eyeballs. (Stop laughing!) Even those aftermarket aluminum strips to help shape the mask didn't work. They have no real strength to hold tight. It's been really frustrating this past Covid year-and-a half. HOWEVER - THIS MASK FITS!!!! Aside from the size being good, the metal bar is just strong enough to hold it's shape. I'm not breathing though my eyes any longer. I'd like to see the bar a bit stronger, but this is just good enough. As for the filter ratings, I have to take that on faith. Still, I'm breathing THROUGH the mask now, not around it.

no gaps

I have a small face so I have had problems finding a mask that doesn't gap, especially under the chin. This is a mask that fits and is still adjustable.

Terrific Masks

My husband and I love these masks. We love that they're organic so you're not breathing chemicals all day. They fit very well with no gaps anywhere. The bendable noseband works much better than other masks we have. Great product!!

Fits phenomenally on my face very comfortable.

comfortable, glasses don't fog

I've only worn it once so far. I had a hard time trying to get the filters in and straightened out.
So far, it's very comfortable.

Love these masks!

I purchased these for my twin 12 year olds when they were going back to school. They say that they can breathe in these masks better than any other ones we tried (even when playing sports). I feel confident in the protection with the masks. And bonus, my daughter wears glasses and these are the only masks that don’t fog up her glasses.

Great masks!

I own close to a dozen different masks and these are by far the best. They are the most comfortable and I love that there is a gap inside the mask between your face and the fabric that makes you feel less smothered.


A protective mask that is comfortable, adjustable, easy on and off, doesn't slide down under your nose and can be worn with hearing aids! Love the unicorn embroidered on the mask too.

Good fitting

I love the material and the stylish look. I love the feel of it and that you can add filters to upgrade its efficiency. What I really love is that it is snug fitting all around especially at the chin. I play table tennis and and also happy it doesn't fog up my glasses like some others but still feels breathable. I was also trying to decide about what size would be best. I opted for the medium even though I have a smaller face. It fits fine, but had I gone with the 'small', I imagine my grandkids might have had gotten a new mask as it probably would have been too small for me. A bit pricey but am very happy with the quality and fit! 👍

Feel secure

This mask is stylish, well made and well fitted. My glasses no longer fog up.

Very pleased

I’ve struggled to find a mask that fits, as I’m on the petite side and most adult masks swamp me. However, I’m a teacher, and after a number of our staff got Covid this school year (despite being vaccinated), I knew I needed to up my mask game. I’m just sad I didn't get these sooner. IT FITS. I really didn’t think it was possible to find a mask that does! It’s a secure fit but comfortable, and I can easily speak in it to my classes. I don’t love that I have to hand wash or that the filters are fiddly, but any annoyance there is outweighed by what a pleasure they are to wear. Plus I simply feel safer at school.

Unicorn heart mask

Very pleased with my purchase. This mask is well made and I appreciate the layers, etc. I am very picky about what masks I buy. They must meet certain standards as I am immune compromised. I was impressed with the washing and care instructions. I haven't worn it yet but I pretty sure I will be a repeat buyer.

Finally found one!!!

I have searched far and wide for a mask that I can tolerate. I have literally bought ten or more different high-end, supposedly non-toxic masks. All of them gave me breathing problems, many hours after removing. There are too many toxic chemicals in most filters. The filters made by Unicorn are truly unique. I have worn my mask 5-6 times now and had no problems. I had given up looking for a safe mask and then I stumbled across the Unicorn breathing mask. I bought the organic, white hemp mask. I just ordered three more. I think they are a bit pricey and high-maintenance, but will gladly accept these things to breathe again!!! Many thanks to Sky and all dedicated to helping people like me. By the way I am very petite (90#) but as recommended by Sky, the adult medium fits fine. Go ahead and buy one. My only regret is not having these masks back when the pandemic started.

By far the best company I have dealt with

A huge THANK YOU to the team at Unicorn Breathing Masks for going out of your way to make sure our new masks arrived in time for us to wear to our family wedding over the weekend. You guys are by far the best company I have dealt with in many years. I was afraid our masks wouldn’t get here in time you guys upgraded our order to priority shipping and our masks arrived in time for us to wash and wear them to the wedding. We love our new masks, they are comfortable as well as effective. Thank you for such a great product and great customer service.

(Attached is a picture of us in our masks at the wedding. We love how nice they look even in a formal setting.)

Sincere thanks!
Melissa and family