Kent A-33 All Clear Auto Inflatable Work Vest [134402-200-004-21]A 33 All Clear Auto Inflatable Work Vest Features: Wide neoprene neckline Universal sizing: fits 30" x 65" chest Cylinder ready indicator shows GREEN if properly armed Durable TPU outer covering Opening in the back accommodates most fall harnesses Secure Pull inflation handle High Vis inflation chamber SOLAS grade reflective material to increase visibility Automatically inflates upon immersion in water or when the wearer pulls the Jerk to Inflate