Shadowaire II PAPR (Powered Air Purifying Respirator)features: *Tough industrial strength construction *Flame-retardant and crush resistant hose *Flame retardant face seal provides full head coverage *Sleek plenum design allows for more head room *Attaches to helmet instead of headgear for comfort *Positive pressure supplies constant flow of filtered air *Drawstring closure allows comfortable custom fit *Adjustable belt with lumbar support *Audible alarm for low battery and low airflow *Airflow exceeds NIOSH standard by over 25% *NiMH battery(no memory retention) Smart Charger provides fast and reliable battery charging Protects against radio nuclides, asbestos and other dusts, mists and fumes with time weighted averages less than 0.05 milligrams per cubic meter. Meets OSHA requirements & NIOSH approved. Meets all applicable ANSI Z88.2-1992 Standards for Respiratory Protections. Meets All Applicable ANSI Z87.1-1989 Standards for Eye and Face Protection.