Is a PFD sized by weight or chest?

Adult PFDs are sized by chest measurement; weight is only a rough guide.

How tight should a life jacket be?

Snug — it should not pull up over your face when tugged at the shoulders.

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A life jacket (PFD) is sized by your chest measurement, not weight. It should fit snugly without riding up when you lift the shoulders.

Size finder — enter your chest (cm)

Enter your chest to see your recommended size.

Wrap a tape around the fullest part of your chest.
Keep the tape level and snug, not tight.
Try to lift the buckled PFD by the shoulders — it should not slide over your chin.

Layering over a wetsuit	Size up one chest range.
Between two sizes	Pick the smaller for a secure, no-ride-up fit.
Whitewater or sailing	Choose a higher-flotation rated PFD in the same chest size.

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Is a PFD sized by weight or chest?: Adult PFDs are sized by chest measurement; weight is only a rough guide.
How tight should a life jacket be?: Snug — it should not pull up over your face when tugged at the shoulders.