A life jacket is a personal flotation device designed to keep individuals afloat and safe in water during emergencies. Made from buoyant materials, life jackets are commonly worn in boating, maritime, and water sports activities to provide essential flotation and prevent drowning. These jackets are available in various sizes and designs to suit different water conditions and activities. Proper fitting, regular maintenance, and awareness of usage are key to ensuring that a life jacket provides optimal protection in emergency situations.