These systems reduce weight without compromising performance. The powered air purifying respirator (PAPR) is ideal for First Responders. This system provides continuous flow of filtered air to the wearer. The hood can be worn with facial hair and glasses and meets military standard MIL-C-51251A for resistance to chemical and biological weapons. The system is NIOSH-approved. NSN: 4240-01-496-1938 Butyl rubber hood used on 3M Breathe Easy 10 Powered Air Purifying Respirator(PAPR) Systems. Chemical resistant material provides high level of airflow while providing excellent vision and accomodates facial hair and glasses. Belt included. Available with a disposable lithium battery or rechargeable NiCad battery (single or multi station charger sold seperately).