Breathe Out Traditional Masks.

Breathe in

with M21®.

Introducing M21® – the world’s first two-chambered mask design system utilizing its patent-pending Directional Airflow Technology™.

The Anatomy of M21® face masks in Philadelphia, PA

Traditional masks force wearers to continuously breathe in their own recirculated, exhaled air, which can interfere with airflow and restrict oxygen intake. M21®’s two-chamber design supports the natural breathing process by isolating the nose and mouth.

Face masks have become an indispensable part of our daily lives. While they were earlier worn primarily by healthcare workers, they are now being used by everyone as a means of protection from harmful pollutants, allergens, foreign particles, and diseases. At M21, we recognize the importance of face masks and work towards ensuring a constant supply of high-quality face mask inserts for daily use.

The face mask supply market has grown exponentially since the onset of the pandemic. At M21, we provide face mask inserts that are designed to provide maximum protection against external pollutants and other harmful particles.

The Purpose of Face Masks

The main purpose of wearing a face mask is to prevent the spread of diseases. Studies have shown that masking, coupled with social distancing and proper hand hygiene, can significantly reduce the transmission of viruses. Moreover, wearing a face mask can protect individuals from inhaling harmful pollutants and allergens in heavily industrialized urban areas like Philadelphia, PA. At M21, our masks are highly efficient at trapping external particles so wearers can breathe easier and more safely.

Choose M21

At M21, we believe that wearing a mask is an essential aspect of maintaining good personal hygiene. We also understand that the use of face masks can sometimes lead to breathing difficulties, especially for those with existing respiratory conditions.

Our mask inserts are designed to make wearing a mask more comfortable. They help improve air circulation and provide wearers with a more extended period of comfortable mask use. These inserts can be used in conjunction with any mask and are an affordable solution to mask-related discomfort.

If you are in the market for a high-quality face mask, look no further than M21. Contact us today to learn more!

Clean, Isolated

Maximum level of Comfort

Ideal for long-term wear

Face Mask Supply Company Based in Philadelphia, PA

Below are the face mask inserts currently available. Select the option most appropriate based on the face masks that you and your family wear. Whether you wear a face mask for protection against allergins, pollutants, foreign particles, or disease, you’re one step closer to breathing better!

M21+™ Universal


M21+™ Surgical


Two Pack


Family Pack


Show us your M21® mask insert by using our hashtag on social media!


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