The Onyx A/M-24 Auto Or Manual Inflatable LIFE JACKET in Blue Black is a high-quality life-saving device designed for adults engaged in water sports activities. Made by the reputable brand Onyx, this life jacket offers both automatic and manual inflation options for added safety and peace of mind. With its durable construction and one-size design, this inflatable life jacket is a reliable choice for anyone looking to ensure their safety while enjoying outdoor water adventures.