Automatically inflates upon immersion in water or when the wearer pulls the inflation handle. Provides comfort, safety and peace of mind for the sportsman, flatwater paddler, or recreational boater without knowing you have it on, until you may need it. Lightweight, low profile design keeps you cool in warm weather without limiting movement. Soft neoprene neckline for all day comfort. Reflective piping for increased visibility. Durable ripstop fabric resists tears and punctures.