Please know we are ON IT, and will fulfill orders in the order they are received. Thank you for becoming part of our Unicorn family! We are so incredibly THANKFUL for you!

World's most comfortable, breathable, reusable

Organic High Performance ASTM Masks

Committed to 100% Transparency

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

International Shipping

Free US shipping on $200+ orders. 
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.

Did You Know?

Mask companies are required to post their full F3502 test result findings in the mandatory 'Report of Testing format' in order to be compliant to the ASTM F3502 standard. No report, no compliance! Click here for Unicorn Mask test results.

"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 Masks offer High Performance breathability at 5mm h2o tested to the new ASTM F3502 standard. The lower the score, the more breathable. ASTM F3502 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 Workplace 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 5mm. 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.  

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 99 reviews
Organic Hemp

Great mask! Fits tightly, but not too tight. The bendable nose band is a plus as well as the fabric under the chin. The mask does not ride up into your eyes. Highly recommend!

Good for teachers

I am a teacher and feel safe and comfortable with the beautiful stylish masks.

Great Masks

Great fit, well made.

Chin Security!

I like both masks I ordered from Unicorn, especially the thick nose wire and the chin piece. I will say the filters are a little tricky to insert but it gets easier with practice. I would order the red floral pattern in adult if offered, please?

My Mask Bonnie

I love your masks. They are very comfortable and stay in place . You can breathe with this mask. The nose piece is great!!
This is the 2nd mask I have bought from you.

Fits well

Very custom, comfortable fit!

Great mask!

This mask is super soft and seems to be really breathable. The fit is really good and comfortable. Unlike most other masks, this one doesn't make my glasses fog. The filters are great. If you read their instructions they are not too hard to get in.

Excellent mask that is very comfortable to wear. I will buy them again.

Love this mask!!

I love this mask and so does my daughter! Going back to school this year has been stressful, but these masks definitely help relieve a little bit of the worry. They fit wonderfully - snug fit over the nose and chin, they don’t slide down like a few other masks we’ve tried, and they are super comfortable. My daughter doesn’t mind wearing these for the 6 hours she’s at school. We will be ordering more.

Fantastic mask

This mask is the best one that I have worn. The fit is snug and the nose piece is perfect.

Happy Camper

The previous mask I wore caused my breathing allergies to flare-up and after wearing it even for a short time it caused me to have problems breathing for days after I removed the mask. I guess it was from the polypropylene and the filters used in this mask. I dreaded having to wear it. I knew I needed to find a more human and climate friendly mask. I thoroughly researched masks online for days, I was getting very disappointed with what I found until I hit on the Unicorn Breathing mask. I had many questions that I needed answered before I made my decision to purchase this mask. I emailed the company numerous times over a period of a few days. They responded quickly and patiently to all of my concerns and questions. I am a night owl and I was surprised when I emailed them at 1:30 am and they got back to me in a few hours I guess they were working around the clock. My mask and pack of extra filters came quickly with easy to understand directions. I love my new mask with its organic hemp material I have no more breathing problems. It is very light. When I first got it I was amazed how well it worked to filter out toxic odors. My first excursion wearing the mask I went to the Auto body shop to pick up my car. I decided to take my mask off after I was driving for about 5 minutes only to put it right back on because the car smelled heavily from the chemicals and auto body parts used to repair the car. Amazingly the mask had filtered out all odors obviously I put the mask right back on. Thank you Unicorn for being a forward thinking people and planet environmentally conscious company. You can't see, but I am smiling under my mask. Happy to have found you.

Too cool for school?

All my kids are physically back to school for the first time in 17 months this month. It was nerve wracking to send them back given one cannot possibly know how other families act outside of school. A huge concern for me was also the fact that 1) all my kids are under 12 yo. 2) would they wear a mask all day 3) delta. One thing I did for over 3 months is read up on mask technology. I can tell you now I am a huge fan of these Unicorn breathing masks as they are comfortable, not so thick that it gets stuffy and likely lead the kids to take off the masks (even on school buses where other kids take those liberties). The one other factor I wanted to shoot for was a mask that sits snugly, feels comfortable and does not look like a diaper. Once I did more research I came across these and suffice to say, my kids and I are happy with the fit and pleased all around. And as one of my boys said, it's kind of cool for school right? Dab!

Comfortable and sturdy

I've finally found a mask my daughter says "I forgot it was there" when wearing it for over 3 hours the first time. It fits snugly, she can adjust it so it does not fog her glasses. Excellent customer service. We are very happy with our Unicorn Breathing Mask.

Great fit

Best mask I've worn. Fits perfectly, is breathable and first mask I've bought that doesn't fog my glasses.

Outstanding Mask!

I needed a new go-to mask, as well as wanting one with an ASTM F3502 rating, and I found both with this mask! This is one of the most comfortable, well fitting masks I've ever warn and I feel extra safe wearing it for its ASTM rating. The hand wash only is a little bit of a hassle, but it's well worth it. I cannot recommend this mask enough!

Comfortable and effective for teaching

This mask has proven to be a great tool in the classroom. I am in our school building 7 AM - 6 PM most days, so an effective and safe to breathe through mask that I can wear for hours is important. The Unicorn masks are lightweight and comfortable and don't fog my glasses. I did have to do some major adjusting of the nose wire, I would recommend you play with the mask at home to get the wire just where you need it before you head to work, but then these are great!! For those debating between a medium and a large, I bought both, and actually both work fine. The large is definitely larger, especially in the under the chin area, but I can wear them both. I'm going to try the Hemp next. Thank you making this product! (P.S: my students think it is cool my mask says Unicorn!)

Love this mask

I love this mask. It has heft, the nose guard seems very strong, and it is easy to breathe in. The filters were easy to put in, and it does a good job of minimally fogging my glasses. No complaints whatsoever

Finally the perfect mask!

Our family loves our Unicorn masks! They check all the boxes- quality fabric that doesn’t irritate the skin, snug fit, easy to breathe, and no fogging of glasses. The stretchy chin fabric is genius. They are also well-made, sturdy and look nice- kudos to the design and sewing teams! Most importantly, though, we feel well-protected in public spaces, without having to rely on throat-irritating KN95 masks. Thank you, Unicorn! Your customer service has been outstanding! And I’d love to see a black hemp one added to your collection. ;)

My search for the perfect mask is over!

Honestly, I never write reviews but this time I’ve been so happy with the product and the customer service that I felt I had to share my experience. My young girls have been wearing the Unicorn Breathing masks for about two weeks now to school and dance, so between 6-8 hours a day. After the first week they both proclaimed them to be “the BEST masks they have ever tried!” And I will add we have tried a LOT of masks in my never ending search for comfort, fit, breathability and most of all protection. My search for the perfect mask is finally over! These are well made, quality masks with a shape designed to keep it away from your mouth and nose allowing you to breathe and talk freely without sucking in the material. The chin wrap is ingenious and I love how easy they are to adjust to the right fit around your face and then that’s it! You can put your hands down and not have to touch it again. These masks actually stay put! Even my Kindergartener comes out at the end of the school day with her mask perfectly in place and both girls can enjoy their dance classes without constantly having to adjust their masks. Sometimes when we are in the car I have to remind them that they can take their masks off. They forget they even have them on, that’s how comfortable they are. The filters take a little practice at first to place correctly in the masks but they stay flat and in place and are completely covered by the soft inner layer of the masks unlike others we have tried that tend to bunch up and come out. I honestly can’t say enough about how happy we are with the Unicorn Breathing masks. I just placed another order and am telling all my family and friends about them!


Comfortable to wear and great customer service

It’s worth the price!

Seriously, THE most comfortable mask I have…..and I have about 30! I honestly love it!!


Needed a mask to wear to the gym that wouldn't keep falling in my mouth or falling down. This mask is genuinely a solid pick! No complaints at all so far.


Very well designed and made. Comfortable to wear and provides excellent coverage .

Best fit ever!

I really like everything about the mask. I especially like how it fits perfectly over most noses. We’ve got a few different ones in our household! No fogging my glasses either.
I’ll be ordering more filters soon!


This Natural Linen mask was my second purchase, the first was the Tencel mask. The Tencel mask is a great mask for people with no breathing problems but the Linen mask is great for those of us with lung problems!
I had a pulmonary embolism in 2014 that damaged my lungs making breathing difficult. As a result I couldn't find a mask for my life that worked for me AND felt protective until Ms. Sky suggested this Linen mask. The mask is very well made, feels secure, and actually makes me feel safe going out in public. I love this mask!
I am so grateful to Ms. Sky for taking the time to reach out to me and let me know about the breathabilty of this mask! She is a very open honest caring person who wholeheartedly wants to help people, very special woman right there - you could say Ms. Sky is a unicorn as she is one in a million!