3MRBA-4630-S / BA-4630-S SCBA SCBAG 4500 PSI HOOP-WRAPPED 3M™ Air-Mate™ SCBAG™ Self-Contained Breathing Apparatus This unique self-contained breathing apparatus (SCBA) is stored in a reversible carrying bag That opens to form a vest with the SCBA system in place and ready to use. Its perfect for confined spaces and emergency use since it can be donned so quickly. The full facepiece is stored in a front pouch until needed and features a quarter-turn pressure-demand valve for a secure attachment The first-breath activation does not start the flow of air until after the pressure demand valve is connected and the first breath is taken. Features a shoulder-mounted low-pressure gauge, audible end-of-service alarm, and lightweight aluminum, hoop-wrapped 30-minute cylinder. Choose durable, black Cordura™ nylon vest harness material or flame-resistant brown Advance™ material. NIOSH Approved.