The Ring is a reusable respiratory mask with a circular opening, which a round filter can be placed over and secured with a rubber band. 

 

It is made using a Bellus3D face scan (created with the Bellus3D FaceApp or Dental Pro for iPhone X+ or iPad Pro with TrueDepth Camera) and a 3D printer to precisely fit a person's facial geometry.

 

Attached is one example that fits about 15% of the population. 

 

You can download the Bellus3D FaceApp (https://apps.apple.com/us/app/bellus3d-faceapp/id1352268131), scan your face and output a personalized STL to use on your 3D printer. 

 

The Ring mask is in direct contact with the skin so it is recommended to print with softer and biocompatible materials, such as TPU Multi=Jet Fusion (MFJ or Selective Laser Sintering (SLS) technologies. Hard materials such as PLA is not recommended to avoid facial damage.

 

 More information can be found here: https://bellus3d.com/solutions/mask-fitter