6 Sets (144 hours) of Replacement Electrospun Nanotechnology Filters
6 Sets (144 hours) of Replacement Electrospun Nanotechnology Filters

6 Sets (144 hours) of Replacement Electrospun Nanotechnology Filters

46.00 SR

*IMPORTANT: Please be sure to MATCH Filter Size dropdown below with Masks you are purchasing or have purchased in the past.

  • Free Shipping on $125+ orders (US). Ships from California.

  • Free Intl Shipping (Canada) on $150+ orders.

  • Due to health & safety codes, this item is not returnable. See policy.

  • Secure transaction.

6 Sets (144 hours) of Replacement Electrospun Nanotechnology Filters. (6 right & 6 left) in each bag.

Each single use filter set (1 right & 1 left) is usable for up to 24 hours of use. Filters cannot get wet, be washed, or be reused, so please remove and discard filters every time you wash your mask. Reusing filters causes reduced filter efficiency, loss of mask breathability and can cause bacterial infections if they are overused. This is the case for any mask filter or meltblown/surgical mask on the market! We always recommend that you replace filters immediately after air travel, attending a high-risk event, or any time you feel exposed. For filter instructions please see our video here.

Each mask filter contains an excess of 15 miles of nanofiber matrix (thousands of times smaller than a human hair) in an area less than 1mm thick! They are invisible to the naked eye and can protect with 99% efficiency all the way down to nano aerosols as small as 0.1 microns. 

Note: our non-woven polymers are made sustainably at low temperatures in New Zealand, and are inert and non-toxic. We do NOT use antibacterial additives, graphene, carbon, activated charcoal, silvadur, or woven heavy metal nano particles such as copper, silver or zinc common in many surgical and filtered cloth masks. Our 15 miles of nanofiber matrix is sandwiched between two layers of polypropylene (one on each filter side), so there is no chance of fiber shedding or breathing in fine nano particles. Our materials were designed for kids, seniors and those with respiratory conditions and chemical sensitivities. 

These filters are shaped and designed specifically for the Unicorn Mask, and we therefore do not recommend inserting them into different mask brands, as it will drastically reduce the efficiency rating!

  • Kids size options to fit your Unicorn mask:
  • Kids Small: Ages 2-3
  • Kids Medium: Ages 4-5
  • 45-75 Lbs will be Adult Small

  • Adult size options to fit your Unicorn mask:
  • Small: 45-75 Lbs, 20-34 Kg
  • Medium: 75-130 Lbs, 34-59 Kg
  • Large: 130-190 Lbs, 59-86 Kg
  • X-Large: 190+ Lbs, 86+ Kg

Featuring proprietary New Zealand SETA® electrospun nanotechnology

99% Efficiency blocking particles at 0.1 microns (Coronavirus ≈ 0.125 microns)

Filters are not washable. Mask sold separately.

*Unicorn masks are ASTM F3502 face barrier coverings, and not considered medical masks or respirators.

"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."


Based on 235 reviews
Safe, reusable, environmentally friendly, and comfortable

The Unicorn masks are safe and effective, but that's not all. Unlike other safe and effective masks, they are environmentally soundly sourced and made. Additionally, they allow for easy speech with their chin covers. If you want more, they are not one and done. They are very comfortable to use over and over again.

Fast delivery to the UK and the correct item. What more can you ask for.

Good replacement for my Meta Masks

Good quality masks and filters. Accurate sizing. Like the dark color and very minimal brand logo. These are good for people who want better masks that are more comfortable than N95.

Good protection

Happy to be able to purchase these original masks. They fit well and the extra piece that fits under the chin is a game changer.
Masks run small. I would size up!
Thank you for your patient assistance.

love it!

This is my second order and I just really love these masks. I have a small face and have struggled to find a brand that fits correctly and protects me on long trips. I love these!

Mask review

Mask is the perfect size and am able to breathe easily through the mask and filter. Happy it blocks particles down to 0.1 microns

Really surprised at how much I love these masks...

I was skeptical at first, but I really love these masks. I'm immunocompromised and have a lot of health conditions (including with my lungs), as well as chemical sensitivities.. So I need a mask that really works to filter out small particles, and that's how I found these masks because they have been tested down to 0.1 microns, where most masks are only down to 0.3 microns. I love how the mask is made with the healthiest possible materials as well, especially because the lungs are so susceptible to toxins. The customer service is quick and responsive and they helped resolve an issue I had quickly.
The masks actually fit well and retain their shape, they seal well with the help of the nosepiece, and you're not breathing in the mask since it has structure. I'm Asian and don't have a bridge on my nose and the mask still sealed well--only thing is that I had to go up a size probably because of that. I've seen another mask brand say to size up in this style mask if you're Asian.. I went based off Unicorn's size chart and it was too small, so consider sizing up in this situation or really thinking through your sizing (especially given how expensive these masks are, and you only get a slight discount if you have to buy another size). Filters are light and easy to breathe through (the easiest to breathe through that I've found that actually has good protection). The chin fabric helps also to seal off any gaps at the bottom of the mask, and I actually wear it on my chin vs. under it, which means my mask doesn't shift when I talk and it's very comfortable. Overall, these masks are awesome, I love the company and what they stand for, and I don't plan on buying any other mask brands as long as Unicorn is in business.

Great mask that checks all the boxes and more

This is a great quality mask that goes the extra step. Capturing microbes at .01 rather that .03 is a major benefit. Plus it is washable, reusable, has replaceable filters and is overall great for the environment. I am currently on my second set., and I am much happier with a high quality reusable mask rather than a collection of single use masks.

Most comfortable and breathable reusable for my sensory child

These are the most comfortable and most breathable reusable masks I have found. My sensory child does not wear the paper ones, as they are not soft enough; but these Unicorn masks do the trick! And their protective level is incredible!

Second time buying these. They fit perfectly. Have had both kids use them while recently flying and it was on the entire time.


Have also found these useful while cycling. Provide warmth against winter winds as well as protection against dust while farmers are harvedting.

Fantastic mask

Love the fit-better than any other mask I have tried. Very comfortable. Love the many layers of fabric and filters. Breathing is excellent compared to N95s. Will always wear and keep a supply on hand.

Feels protective

This mask is best fit I have found…and I have tried quite a few!

Only negative is the filters are a little fiddly to get in.

Great fit!

Just like the first Unicorn mask I purchased, this one fits like a glove. No fogged glasses and difficulty breathing. I almost forget I'm wearing it.

XL Sport

Great product. Works well, comfortable, efficient and durable


The masks are comfy to wear, and I love the unicorn design. Getting the filters into the mask is somewhat of a challenge.

This mask is very comfortable

This mask is very comfortable & I feel safe and protected by it.

fabulous masks

These are the best masks we' ve used in the last two years. Perfect fit, easy to replace filters and fit perfectly into a pocket or purse.

Great as always

Excellent overall design and comfort. Have worn these on planes and other crowded places. So far, so good! (I’m also backed and boosted; you need it all) Now have 15 for a family of 3, seems like the right amount

Only Unicorn Breathing Masks for Me!

I have been using only Unicorn Breathing masks throughout the pandemic. I have many of the styles and this is my 7th mask. It is very comfortable. The bottom line is, I am 75 years old and I have not been sick at all in the past 1 1/2 years. I attribute this to precautions I have taken which include using my Unicorn Breathing masks.

So good ordered a second one

Loved the first one so much that I ordered a second one for my wife! The fit is very good for a reusable mask, the nose clip is starting to show some wear in it of not as stiff but still functional, the chin cover is also showing some wear but is still functional. I feel comfortable wearing it and washing it and changing the filters is simple.

Despite the two cloth layers + filter it is no more difficult to breathe through than a surgical mask - which I wear all day at work. The under the chin portion makes the mask more secure than others. Overall I feel extremely safe wearing this mask.


Finally, a mask that fits my face and provides both comfort and protection. I love being able to order different sizes for various family members. They're easy to put on, comfortable, don't fog my glasses and dry overnight when I wash them. Perfect!

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