Facemask filter assembly

A facemask filter assembly to be worn by a user, the assembly comprising:

• a layer of air filter material having a periphery sized to fit inside of a surgical-type facemask, the layer of air filter material having:
• a height equal to or greater than a distance between a midlevel of a nose and a top of a chin bone of the user;
• and
• a width greater than a distance from a first corner of a mouth of the user to a second corner of the mouth of the user;
• and
• a strip of compressible foam material coupled to the layer of air filter material near the periphery of the layer of air filter material, wherein the strip of compressible foam extends along some or all of the periphery of the layer of air filter material, wherein a height of the strip of compressible foam extends away from the layer of air filter material between 0.25 and 0.75 inches from a backside of the layer of air filter material, and wherein the strip of compressible foam is configured to seat against a chin of the user above the chin bone to elevate the layer of air filter material off of lips and the mouth defining a breathing chamber in front of a user's face.

A facemask filter assembly to be worn by a user, the assembly comprising:

• a layer of air filter material having a periphery sized to fit inside of a surgical-type facemask, the layer of air filter material having:
• a height equal to or greater than a distance between a midlevel of a nose and a top of a chin bone of the user;
• and
• a width greater than a distance from a first corner of a mouth of the user to a second corner of the mouth of the user;
• and
• a strip of compressible foam material is adhered to the layer of air filter material near the periphery of the layer of air filter material, wherein the strip of compressible foam located around some or all of the periphery of the layer of air filter material, wherein a lower edge of the layer of air filter material and adhered strip of compressible foam is substantially straight, wherein the substantially straight strip of compressible foam adhered to the lower edge of the filter can be deformed into an upward curving arch shape that effectively decreases the distance from an upper edge of the filter periphery to the strip of compressible foam adhered to the lower edge of the layer of air filter material so that the filter assembly can adjustably fit a smaller face with a shorter distance between the midlevel of the nose and the top of the chin bone of the user.