For CERT teams and Light Urban Search & Rescue teams these masks provide protection against dust following a disaster. Large filter area helps protect against dust and particles such as cement, sand and pollen while allowing easy breathing and speaking. Contoured, non-woven filter material with metal nose piece conforms comfortably to a variety of facial features. Economical and maintenance free can be discarded at the end of the day. Low-profile design can be worn with goggles or glasses. Not NIOSH approved.