What is the following with regards to inflatable personal flotation devices (PFD)?

Inflatable personal flotation devices (PFDs) are safety devices designed to provide buoyancy in water, significantly enhancing the wearer's chances of survival during emergencies. Unlike traditional foam PFDs, inflatable PFDs are compact, lightweight, and can be manually or automatically inflated when needed. They are commonly used in recreational boating, sailing, and water sports, but require regular maintenance and checks to ensure they function properly. It's essential for users to select a PFD that meets their specific activities and local regulations.