Each pouch features a hook-and-loop closure for immediate access to hood and on/off valve. Also has an adjustable carry strap so you can wear it around your neck, over your shoulder or around your waist. Respirators are easy to put on and begin functioning in seconds. One simple adjustment lets you get the unit over bulky eyeglasses, full beards—even hard hats. Elastic drawstring on hood creates a seal at your neck to minimize leakage and improve protection. Anti-fog laminate ensures good visibility. Each includes a lightweight, refillable aluminum cylinder; valve and pressure gauge assembly; spring-reinforced, kink-resistant breathing tube; protective air hood and an easy-to-maintain, detachable regulator. Operating temperature is 0°–160°F. Choose from units with 5 minutes (No. 68043) or 10 minutes (No. 68044) of emergency breathing air.