Fit Guide

Find your fit.

Use the following sizing guide to ensure the B2 Mask is right for you.

B2 measurement nose to chin
B2 sizing table

Measure nose to chin

Use a piece of string or a ruler to measure the distance between the tip of your nose and the point of your chin. Make sure not to measure under the chin as the B2 Mask is not designed to wrap below the chin.

Verify Fit

Ensure that your nose to chin measurement is within the range shown on the table above. The bottom strap of the B2 Overlay, which fastens around the back of the neck, has a maximum circumference of 21 inches (53 cm).

 If you are outside of the range, we encourage you to sign up here to be the first to know when they are released.

Face Shape & Fit

Mask seal position on face
Seal Location

Compact Fit

B2 Mask has a flexible facepiece that conforms to your face to form a seal. It is normal to take a few days of use for the facepiece to break in and achieve the best position for sealing.

Adjustment and Seal

The B2 Mask is designed to sit low on the bridge of your nose. If you have a prominent or low nose bridge, you can flip the inner seal up achieve a tighter fit.

Due to sanitary reasons this item is not returnable or refundable. All sales are final.
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