What is the safest use of a life jacket or pfd?

The safest use of a life jacket or personal flotation device (PFD) involves ensuring it is the correct size and type for the wearer, and that it is worn properly at all times while on or near water. Additionally, it's important to check that the PFD is in good condition, free from damage, and certified by relevant safety standards. Always wear a life jacket in situations where there is a risk of drowning, such as boating, swimming in open water, or engaging in water sports. Finally, educate yourself on the specific requirements and guidelines for the type of water activity you are participating in.