Driftsun Universal Fit Automatic / Manual Inflatable Life Vest PFD - Adult Auto Inflate Life Jacket UNIVERSAL FIT: The adjustable slender design allows for a wide range of motion and all day comfort out on the water. AUTOMATIC INFLATION: The life jacket utilizes a 33g CO2 cartridge to automatically fill the inner chamber with air when submerged under water or by manual pull of the T-cord. An oral inflation tube is provided to increase or decrease buoyancy. DURABLE COMFORT: The neckline is made of soft neoprene material with 300D protective cover to ensure all-day long-lasting durability and comfort. SAFTEY FEATURES: The vest is equipped with reflective tape, safety whistle, and manual oral inflation tube. COMPACT DESIGN: The product features high strength material, high performance utility and lightweight compact design.