What is a requirement for personal flotation devices (PFDs)?

Personal flotation devices (PFDs) must be properly sized for the intended wearer to ensure effectiveness in keeping a person afloat in water. A PFD that fits correctly will provide the necessary buoyancy and support, allowing the wearer to remain above water, especially in emergency situations. If a PFD is too large, it may slip off or fail to provide adequate support. Conversely, if it is too small, it may not provide sufficient flotation or could potentially restrict movement, making it ineffective. Proper fitting is crucial for safety and can significantly increase the chances of survival in the event of an accident on the water.