Breathe out traditional masks.
Breathe in with M21®.
INTRODUCING M21®
The world’s first two-chambered protective face mask design with Directional Airflow Technology™
Scientific references can be found at the bottom of the page.
The Purpose of Face Masks
The main purpose of wearing a face mask (“masking”) is to limit the spread of certain respiratory diseases.7-9 Studies have shown that masking, coupled with other infection control and prevention strategies such as adequate physical distancing and proper hand hygiene, can protect healthy persons from becoming infected with viruses and prevent infected individuals from transmitting viruses that cause respiratory diseases such as COVID-19 and influenza (“flu”).9-12 Additionally, masking can protect people from inhaling dangerous pesticides, harmful pollutants, and foreign particles, which may be particularly important in densely farmed agricultural areas and heavily industrialized urban areas.8,13-15
M21® Mask
$20.00
Per 5-pack
M21+® clip-on
$15.00
Per Insert
M21+® Slide-On
$15.00
Per Insert
Choose M21
The unique integrated barrier incorporated inside the mask isolates the nose and mouth,
enabling the wearer to continuously inhale clean O2 through the nose and exhale CO2 through the mouth, while affording the same protection as traditional masks.
At M21, we recognize that masking is an essential aspect of public health and an important personal decision. We also understand that masking can be inconvenient or uncomfortable for some individuals7,9,16-19 and can sometimes lead to undesirable health effects such as breathing difficulties, skin reactions, and intellectual or mental disorders.1,3,9,16,20 Experiencing discomfort or having health problems while masking often leads to improper mask use or reduced wearability.16,17,21
Our M21 company products—M21® Mask and M21+® Mask Inserts—are uniquely designed to make masking a more comfortable experience. This translates to an extended period of proper mask-wearing. More importantly, our M21 products improve air circulation during masking, which supports the natural breathing process of humans. At M21, we believe that all of these features should be available to every mask wearer, at an affordable price.
Clean, Isolated
Airflow
Maximum level of Comfort
Ideal for long-term wear
US-BASED PERSONAL PROTECTIVE EQUIPMENT (PPE) MANUFACTURING COMPANY
Our American-made M21 products include the M21® Mask and the M21+® Mask Inserts. The M21® Mask is an alternative to the traditional N95 face mask, whereas the M21+® Mask Insert is to be used with traditional face masks.
Select the most appropriate type of M21+® Mask Insert based on the traditional face mask that you and/or your family typically wear. Specifically, the M21+® Universal can be used with any type of traditional face mask, including cloth, N95, or surgical. The M21+® Surgical, on the other hand, is intended to be used with a traditional N95 or surgical mask but not a cloth mask.
If you wear a protective face mask on a regular basis, whether as part of your personal lifestyle or for your profession, M21® will enable you to breathe better.
This has been proven by science!
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Supporting Scientific References
- Kisielinski K, Wagner S, Hirsch O, et al. Possible toxicity of chronic carbon dioxide exposure associated with face mask use, particularly in pregnant women, children and adolescents – A scoping review. Heliyon. 2023;9(4):e14117.
- Walach H, Traindl H, Prentice J, et al. Carbon dioxide rises beyond acceptable safety levels in children under nose and mouth covering: results of an experimental measurement study in healthy children. Environ Res. 2022;212(Pt D):113564.
- Al-Allaff RGM, Al-Taee SMY, Baker STD. Some immunological impacts of face mask usage during the COVID-19 pandemic. Pak J Biol Sci. 2021;24(9):920-7.
- Atangana E, Atangana A. Facemasks simple but powerful weapons to protect against COVID-19 spread: Can they have side effects? Results Phys. 2020;19:103425. Epub 2020 Sep 30.
- Akhondi H, Kaveh S, Kaufman K, et al. CO2 levels behind and in front of different protective mask types. HCA Healthc J Med. 2022;3(4):231-7.
- Sukul P, Bartels J, Fuchs P, et al. Effects of COVID-19 protective face masks and wearing durations on respiratory haemodynamic physiology and exhaled breath constituents. Eur Respir J. 2022;60(3):2200009.
- Fikenzer S, Uhe T, Lavall D, et al. Effects of surgical and FFP2/N95 face masks on cardiopulmonary exercise capacity. Clin Res Cardiol. 2020;109(12):1522-30.
- Neupane PR, Bajracharya I, Khatry SB. Effectiveness of inexpensive cloth facemasks and their amendments to reduce ambient particulate exposures: a case of Kathmandu, Nepal. J Environ Public Health. 2023;2023:5144345.
- World Health Organization. Advice on the use of masks in the context of COVID-19. Interim guidance. 2020 Jun 5. WHO Reference Number: WHO/2019-nCov/IPC_Masks/2020.4.
- Lau JT, Tsui H, Lau M, et al. SARS transmission, risk factors, and prevention in Hong Kong. Emerg Infect Dis. 2004;10(4):587-92.
- Li Y, Liang M, Gao L, et al. Face masks to prevent transmission of COVID-19: a systematic review and meta-analysis. Am J Infect Control. 2021;49(7):900-6. Epub 2020 Dec 19.
- Cash-Goldwasser S, Reingold AL, Luby SP, et al. Masks during pandemics caused by respiratory pathogens—evidence and implications for action. JAMA Netw Open. 2023;6(10):e2339443.
- Jat R, Ghude SD, Govardhan G, et al. Effectiveness of respiratory face masks in reducing acute PM2.5 pollution exposure during peak pollution period in Delhi. Sci Total Environ. 2024;943:173787. Epub 2024 Jun 6.
- Pacitto A, Amato F, Salmatonidis A, et al. Effectiveness of commercial face masks to reduce personal PM exposure. Sci Total Environ. 2019;650(Pt 1):1582-90. Epub 2018 Sept 10.
- Nguyen D, Tsai CSJ. Inadequate personal protective equipment factors and odds related to acute pesticide poisoning: a meta-analysis report. Int J Environ Res Public Health. 2024;21(3):257.
- Kisielinski K, Giboni P, Prescher A, et al. Is a mask that covers the mouth and nose free from undesirable side effects in everyday use and free of potential hazards? Int J Environ Res Public Health. 2021;18(8):4344.
- Radonovich LJ Jr, Cheng J, Shenal BV, et al. Respirator tolerance in health care workers. JAMA. 2009;301(1):36-8.
- Matusiak Ł, Szepietowska M, Krajewski P, et al. Inconveniences due to the use of face masks during the COVID-19 pandemic: a survey study of 876 young people. Dermatol Ther. 2020;33(4):e13567. Epub 2020 Jun 26.
- Ong JJY, Bharatendu C, Goh Y, et al. Headaches associated with personal protective equipment – a cross-sectional study among frontline healthcare workers during COVID-19. Headache. 2020;60(5):864-77.
- Proietti I, Borrelli I, Skroza N, et al. Adverse skin reactions to personal protective equipment during COVID-19 pandemic in Italian health care workers. Dermatol Ther. 2022;35(6):e15460. Epub 2022 Mar 23.
- Rebmann T, Carrico R, Wang J. Physiologic and other effects and compliance with long-term respirator use among medical intensive care unit nurses. Am J Infect Control. 2013;41(12):1218-23.