How Should a Life Jacket Fit? The Fit Test

A life jacket should fit snugly, be fully buckled or zipped, and stay below the wearer's chin and ears when someone pulls up on the shoulders. The U.S. Coast Guard explains why fit matters: too big, and the life jacket will ride up around your face. Too small, it will not be able to keep your body afloat (opens in a new tab).

Fit is easy to check in two minutes, at home and then in the water. Do it for every person, every season, and every time a child has a growth spurt.

Snug, buckled and zipped

Start with the label. The Coast Guard says to check the label for user weight and chest size (opens in a new tab). Pick the size for the wearer's weight today.

Then put it on properly:

• Every strap, buckle and zipper fastened. The Safe Boating Campaign says all straps, buckles or zippers (opens in a new tab) should be secure.
• Straps tightened, so the jacket hugs the body.
• Leg strap fastened on infant and child jackets that have one.
• No gaps. Water Safety USA says there should be no excess room above the arm and neck openings (opens in a new tab). A snug fit in these areas shows the jacket fits.

The Safe Boating Campaign sums it up: a snug fit is a proper fit (opens in a new tab).

The shoulder lift test

This is the Coast Guard's five-step fit test from its How to Choose the Right Life Jacket (opens in a new tab) guide:

1. Check the label to make sure the jacket is the right size and weight range for the wearer.
2. Fasten it properly. Every buckle, zipper and strap.
3. Hold your arms straight up over your head.
4. Ask a friend to grasp the tops of the arm openings and gently pull up.
5. Look for room above the openings. There should be no excess room, and the jacket should not ride up over the chin or face.

If the jacket slides up to the ears or the chin, tighten the straps and try again. If it still rides up, it's too big. Try a smaller size or a different style.

For children, the test is the same. Lift gently by the shoulders. If the child's chin and ears slip down inside the jacket, it doesn't fit. More on children's sizes in life jackets for babies and children.

Test it in shallow water

A jacket that passes on land can still behave differently in the water. The Coast Guard says: for the best fit, try the life jacket in shallow water under safe and supervised conditions (opens in a new tab). Its main life jacket page adds: try your lifejacket or buoyancy aid on in the water to ensure your airway is clear (opens in a new tab).

How to do the in-water check:

1. Choose calm, shallow water where the wearer can stand, such as a pool's shallow end.
2. Keep an adult in the water within arm's reach of any child. The AAP calls this touch supervision (opens in a new tab).
3. Have the wearer lean back and relax their arms and legs.
4. Watch the face. The mouth and nose should stay clear of the water, and the jacket shouldn't ride up over the chin.
5. Notice how it floats. Water Safety USA says not all U.S. Coast Guard-approved life jackets perform the same way (opens in a new tab): some will turn a person face up and some won't. Testing helps you know what yours does.

The Safe Boating Campaign also says some jackets will turn an unconscious wearer face up, and to test before use (opens in a new tab).

Practicing in a pool also helps children get used to how a life jacket feels. Water Safety USA says life jackets are not swim lesson aids, but exposure to life jackets during swimming lessons (opens in a new tab) teaches a child how one should fit and feel.

Signs a jacket is worn out

The Coast Guard says foam life jackets should be tested for wear and buoyancy at least once a year (opens in a new tab), and that waterlogged, faded or otherwise damaged ones should be thrown out.

Check foam jackets for:

• Rips, tears or holes in the fabric
• Broken buckles, zippers or straps
• Waterlogging, mildew or a bad smell
• Faded fabric. The Coast Guard lists faded jackets among those to throw out.
• A label you can still read

The Safe Boating Campaign adds: no rips, waterlogging or mildew, and store in a dry place when not boating (opens in a new tab).

Inflatable jackets need more care. The Coast Guard says they must have a full cylinder and all status indicators on the inflator must be green (opens in a new tab), or the device is not serviceable. See inflatable life jackets: how they work for the full check.

When to re-check fit

• At the start of every boating or beach season.
• When a child gains weight or grows taller.
• When someone wears it over different clothes, such as a winter jacket.
• When you borrow or rent a jacket. Do the fit test before you leave the dock.

What you can do today

1. Do the shoulder lift test on every life jacket in your home. It takes two minutes per person.
2. Print the Does Your Life Jacket Fit? and keep it with your life jackets.
3. Throw out damaged jackets and replace them with Coast Guard-approved ones that fit.
4. Book a pool session to test jackets in the water with your kids.
5. Need a new one? Use the Life jacket finder and our guide to choosing the right life jacket.