Conforming mask and seal assessment system

A protective face mask comprising:

• a main textile portion adapted to be worn over the mouth and nose of a user thereby creating an inner air space, the main textile portion comprising a perimeter and a filter portion, the filter adapted to permit the exchange air between the environment and the inner air space;
• a deformable member secured to the main textile portion near the perimeter, the deformable member circumscribing at least a majority of main textile portion, and being adapted to be conformed to the physical features of a user's face through the use of pressure, such that when the deformable member is so conformed, the mask will fit snugly against the user's face so that gaps between skin on the user's face and the deformable member are reduced, thereby creating an inner air space;
• a mask securing system operatively affixed to the main textile portion for keeping the face mask securely in place during breathing;
• and,
• a light emitting system adapted to produce light in the inner air space directed towards at least a portion of the perimeter, wherein light from the light emitting system will illuminate skin on the user's face outside the perimeter if there is a gap between the perimeter and the user's face at the at least a portion of the perimeter.