How do I get a good seal on my face?

B2 Mask can take a few hours of wearing to find the right fit. Issues such as air escaping near the nose or the mask moving around can be resolved by trying a few things.

In our experience, B2 Mask takes an hour or two of wearing to get used to the fit. You're meant to move it around a bit to find the perfect spot so that there is no air escaping anywhere. Here are a few things to try:

  1. Move the facepiece up or down your nose. B2 Mask can sit lower on the nose than most respirators, to accommodate eyewear. 
  2. Make sure the "99" logo on the facepiece is at the top. Otherwise, the facepiece is upside down.
  3. Gently wiggle the sides of the facepiece to find the best placement on your cheeks. The structure of your cheeks may be leading to gaps, but if you move the facepiece slightly up, down, left or right, it might conform to your face better. The two sides of your face may have slightly different sweet spots. 
  4. Find the right resting spot on your chin, slightly below your bottom lip. B2 mask is made to rest on top of your chin, not to stretch over it. Its resting spot on your chin acts as a natural anchor to keep it in place.
  5. Adjust your overlay tighter or looser. Find the right amount of tightness with the bottom strap of the overlay so that it secures the mask in place, without uncomfortably pulling anywhere. 
  6. Give it some time. If you are not used to wearing something on your face, it will feel weird at first. Give it 10 minutes or more so that your face can relax. Sometimes the simple act of wearing B2 Mask, and moving and talking a bit, puts it in the right place.

See our other article Will B2 Mask fit my face? for more details on the facial measurements that B2 Mask is designed for.

While B2 Mask fits most adults, it does not fit 100% of the population. We value honest feedback from our early backers, so if you can't find a good fit, please get in touch with us by emailing and we'll figure something out.