North 7900 Series mouthbit respirators offer a quick and economical method to escape non-IDLH emergency situations. Use the respirator as a “visitors escape device” or issue individual respirators to employees as a safety precaution against a potential chemical leak. Silicone mouthpiece is softer and more pliable making it more comfortable to wear for longer periods when the escape route may be several minutes. Hypoallergenic, No latex allergens.