Unique lay flat hood design saves space during storage and allows the hood to fit into a customized NIOSH approved backpack Durable dual chamber blower designed for backpack or belt mounting Butyl hood includes a comfortable, adjustable head band Sentinel is the only NIOSH approved CAP 2 loose fitting CBRN PAPR—delivers twice the filter performance of a CAP 1 system Butyl hood includes a comfortable, adjustable head band Components Blower with battery 3 CBRN filters Lay flat butyl hood Battery charger (for rechargeable systems) Flow meter User's manual Waist belt Order Info Available in Lithium battery assembly