Personal Flotation Devices (PFDs) are safety equipment designed to keep individuals afloat in water. They come in various types, including life jackets, vests, and buoyancy aids, each serving different purposes and levels of buoyancy. PFDs are essential for activities like boating, kayaking, and swimming, helping to prevent drowning. Wearing a PFD is crucial, especially in unpredictable water conditions. They are typically made from foam or inflatable materials and are tested to meet safety standards set by organizations such as the U.S. Coast Guard. Proper fit and usage are vital for effectiveness, ensuring that users remain safe while enjoying water activities.