Inflatables are not for non-swimmers, or for long hours in rough water. Inflatables are not for use where high speed impact is likely to occur. Are good backup to wearable PFDs. More convenient or useful for specific activities. Continuous wear prevents being caught without protection.
Most accidents happen suddenly and unexpectedly.
Not for many hours in rough water. Less safe than other Types if not used according to label conditions. May be better suited to cool climates or seasons. Some Type Vs are approved only when worn. Hold to chest and put arms through opposite straps.