What is the main difference between a life jacket and a personal flotation device (PFD)?

The main difference between a life jacket and a personal flotation device (PFD) lies in their design and intended purpose, particularly in how they perform in keeping a user safe while in the water. Life jackets are indeed bulkier than many other types of PFDs and are specifically designed to keep a person's head above water, providing buoyancy and ensuring that even an unconscious individual maintains the ability to breathe while floating.

This characteristic is vital during emergencies, as it means that those wearing a life jacket are less likely to submerge, significantly enhancing their chances of survival until rescue. In contrast, not all PFDs are designed with this level of safety in mind; some may provide flotation but do not guarantee the same level of head support or reliability in keeping someone afloat.

Understanding the specific attributes of life jackets emphasizes their role as a critical safety device intended for high-risk scenarios, while PFDs may include a broader range of flotation aids that serve various purposes in different water conditions.