The U.S. Coast Guard-approved Full Throttle Onyx CO2 automatic flotation vest provides a wide range of motion and movement with minimal bulk. The slim vest inflates manually by pulling a simple T-cord attachment, or automatically when immersed in water. Its slender design keeps you cool in warm weather, and a soft neoprene neckline means you can comfortably wear it all day on the boat or at your favorite fishing spot. Durable ripstop nylon material resists tears and punctures while holding up to the rigors of outdoor use, and reflective piping offers greater visibility.