The 15212 Tape Anti-Fog Surgical Mask incorporates an adhesive strip that seals securely, but not aggressively, to the face. This allows the mask to conform to the face and provide a secure seal without irritation. The inner mask material provides optimal fiber pindown, which also helps eliminate facial irritation. This mask has a bacterial filtration efficiency (BFE) exceeding 98 percent and low Delta P test results, meaning that it is cool and comfortable. This makes it suitable for use during long procedures.