Mustang Survival Inflatable Work Vest with HIT (Auto Hydrostatic) with Back Flap & SOLAS Reflective TapeFEATURES If it doesn't say work vest, it's not a real work vest. Ideal for constant wear situations, hot, humid conditions and high mobility requirements. Available exclusively from Mustang Survival, the Inflatable Work Vest is the first of its kind. Designed by Mustang's Innovation Technology experts and built for serious users, Mustang Survival has pioneered the standards for inflatable work vests. With a comfortable and low profile fit, the MD3188