Flo Mask Documentation

Flo Mask Pro FFP2 Declaration of Conformity (PDF)



    Frequently Asked Questions

    Q. What tests has Flo Mask performed?

    Flo Mask Pro with the Pro Filter was tested and certified by the EU Notified Body to meet the standards of FFP2.


    Q. Will Flo Mask fit me and my child?

    Flo Mask Kids is recommended for 4 to up to 12 years of age. 

    Fit was our core pillar from day one. That's why our team invested heavily in utilizing the very best 3D scanning technology to scan elementary aged kids across various ethnicities. As a result, we believe we've created an optimal fit for most kids ages 4 to up to 12. Our incredibly soft silicone gasket has been engineered to flex and accommodate various face shapes and sizes among this age group. 

    European rules do not allow kids under 3 years of age to use Flo Mask Kids.

    To better help you make this decision, our mask dimensions (measuring inside dims from silicone gasket to silicone gasket) are:

    Height (nose to chin): 60mm 

    Width (sides of mouth): 64mm 


    Two nose bridge sizes for adults.

    Our adult mask was designed as a one size fits most with just a single difference, the nose bridge size, which we offer in two sizes: low/med and med/high. Based on our data, it should fit over 90% of the world's adult population.

    Use our nose bridge print out tool here (to ensure accurate scaling, please print directly from Adobe Acrobat).

    Here are our mask dimensions (measuring inside dims from silicone gasket to silicone gasket).

    Height (nose to chin): 77mm 

    Width (sides of mouth): 86mm 


    Q. How often should I change the filter?

    • FFP2 Pro Filter - Should not be used beyond one work shift
    • Kids Mask Filter - Up to 8 hours


    Q. Does Flo Mask have an exhaust valve?

    Flo Mask does NOT have an exhaust valve. We found that the high breathability of our filters reduced the need for an exhaust valve.


    Q. Is the filter recyclable?

    Unfortunately, the unique material and manufacturing process to create our filters does not allow it to be recyclable. Please properly dispose of the filter in the trash and remember to always wash your hands with soap after handling a used filter.


    Q. Can I use Flo Mask Pro or Flo Mask Kids for an MRI? 

    The primary housing of Flo Mask Pro and Flo Mask Kids are made of polycarbonate and silicone, which do not have any metal in them. However, the straps do contain metal in the buckle and push button lock. Therefore, if you're looking to use Flo Mask or Flo Mask Pro for an MRI, please be sure to replace both straps with your own pure elastic ones. 


    Q. Does Flo Mask contain latex rubber? 

    The elastic straps that come with each mask currently use latex rubber. We are working with the EU Notified Body to obtain approval of our non-latex straps, targeting approval by end of year.


    Q. Where is Flo Mask made?

    One of the most important aspects of Flo Mask, the filter, is manufactured in the United States. The mask itself is manufactured in China through a highly reputable manufacturer that makes products for some of the most notable brands in the world. We perform the final assembly here in the San Francisco Bay Area to ship out to you.