Personal flotation devices (PFD) are wearable or throwable floatation devices used to keep a person afloat in water. They are used on all recreational, commercial and military watercraft as well as on aircraft and by workers who are working around or above water. Common PFD types include buoyancy aids, lifejackets, survival suits, and lifebuoys. Personal flotation devices provide buoyancy using one of a number of options, including foam material and inflatable gas chambers for air or carbon dioxide.
An assortment of PFDs, including a lifejacket (left) and a lifebuoy.
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