Abstract: The present invention relates to a life float. The life float comprises a stretching capsule and a string or cord starting at the ends thereof, arranged to pass around over a shoulder and under an arm. The watertight capsule consists of a part resembling a test tube and a cap in the shape of a test tube bottom. The inside of the capsule includes a float to be filled, a small gas capsule and a pricking mechanism therebetween for the gas capsule, a pressure reducer, an air vale, and a whistle. The capsule is to be placed close to the chest so that a person can reach it with his hands. When needing the float, the person catches the capsule and pushes it further off from his/her body. Hereby, the cap of the watertight capsule opens, owing to the pulling movement caused by thread 1, and the threads pull the entire float out. The rest of the inside remains within the capsule. As the float is extracted, the mechanism pricks the gas container, thus making the float to be filled.