Onyx M-24 MANUAL INFLATABLE LIFE JACKET, Style VestSize Adult Universal Manually inflates when the wearer pulls the Jerk to Inflate handle. Equipped with back up oral inflation. Minimum buoyancy of 22. 5 pounds when inflated. In Sight shows GREEN if the product is armed and ready to use; shows RED if not ready to use. Provides comfort, safety, and peace of mind without knowing you have it on, until you may need it. Comfortable, lightweight, low profile design ; For persons 16 years of age and older;