Jetpilot Cause jet ski life jacket in Blue, front view with the waist buckle, D-ring and PK Lok zip

Rider standing at the handlebars of a jet ski on the water in the Blue Cause life jacket

Three-quarter view of the Blue Cause with one hidden Supergrip handle pulled out at the side

Back of the Blue Cause with both Supergrip handles out and the Jetpilot print across the shoulders

Close-up of a Supergrip handle out of its zipped side pocket on the Blue Cause, with the Hidden Supergrip print

Close-up of the PK Lok zip, waist buckle and D-ring on the Blue Cause

Close-up of the Jetpilot and Cause logos and EcoPrene label on the lower back of the Blue Cause

Rider sitting on a jet ski in the Blue Cause life jacket, with a boat on the water behind

Jetpilot Cause Life Jacket - Blue

4.9

Rated 4.9 out of 5 stars

188 Reviews

L50S

$209.99 AUD

4.9

Rated 4.9 out of 5 stars

188 Reviews

or 4 payments of $52.50 with

Colour:Blue

Jetpilot Cause Life Jacket - Charcoal/Orange L50 4 — image 5

Jetpilot Cause jet ski life jacket in Red, front view with the waist buckle, D-ring and PK Lok zip

Jetpilot Cause jet ski life jacket in Yellow, front view with the waist buckle, D-ring and PK Lok zip

Jetpilot Cause jet ski life jacket in Orange, front view with the waist buckle, D-ring and PK Lok zip

Style Code: JA24218

Colour: Blue

Style Code: JA24218

JA24218

Cause size guide

Your measurements

Size chart

How to measure

Chest

Wrap a soft tape around the fullest part of your chest, under your arms. Keep it level across your back and comfortably loose.

Weight

Weigh yourself, then check you sit inside the weight range for that size.

How the Cause fits Trimmed Straight Fit

Cut straight through the body rather than narrowing at the waist, with a waist buckle that pulls it snug so it stays put.

Check the fit

The lift test

Zip it, clip the buckle and get a mate to lift it at the shoulders: it shouldn't ride up past your chin or ears.

Tight fit = safe fit

It should feel snug when it's dry. It settles in once it's wet, and a loose vest can ride up or slip off when you hit the water.

Between two sizes?

Send us your chest and weight and we'll help you pick before you buy.

Chat with us 21-day returns

Free shipping orders $200+
21-day returns
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About the Cause Life Jacket

A vest that still feels good at the end of a long day.

Want a vest you'll barely notice by the last run? The Cause is built from EcoPrene, rated 30% lighter than traditional neoprene, over Freelite foam with bevelled edges that keep the profile low, so there's less weight and bulk on you all day. A PK Lok zip and waist buckle hold it snug, and Hidden Supergrip handles tuck away when you're riding solo. There's a reason it's Jetpilot's most popular life jacket.

Approved to Australian Standard AS 4758 Level 50S.

Built for: recreational jet ski riding.
Best for: long days on the ski.

EcoPrene shell: rated 30% lighter, so you notice it less
Low-profile foam: bevelled edges, less bulk
Waist buckle: holds it snug as you ride
Hidden Supergrip handles: tuck away when you're solo
Lanyard clip: your kill-switch lanyard stays on you

Complete your ride

Picked to go with this vest.

Venture Handle Bar Bag $69.99

Essentials Watercraft Kit $299.99

Jetpilot Shield 2-in-1 Interchangeable Sunnies & Goggles

Shield 2-in-1 Interchangeable Sunnies & Goggles $149.99

Jetpilot x Strong Arm Strap $49.99

The Specs

Standard: Australian Standard AS 4758
Level: 50, high-vis (Red, Yellow, Orange, Charcoal/Orange); 50S (Black, Blue)
Entry: front entry, PK Lok zip and waist buckle
Shell: 100% EcoPrene, rated 30% lighter than traditional neoprene (Black, Blue); Flex Lite Ultra neoprene with EcoPrene lower panels (Red, Yellow, Orange, Charcoal/Orange)
Foam: Freelite approved bevelled-edge buoyancy foam
Handles: patented Hidden Supergrip handles
Lanyard: lanyard safety clip
Fit: trimmed straight, comfort cut
Sizes: S, M, L, XL, 2XL, 3XL, 4XL
Best for: recreational watercraft

Designed For

Jet Ski Riding
Behind the Boat
Carrying a Passenger
Sizes to 4XL

The Fit

Trimmed Straight Fit
Cut straight through the body rather than narrowing at the waist, with a waist buckle that pulls it snug so it stays put.

Tight Fit = Safe Fit
It should feel snug when it's dry. It settles in once it's wet, and a loose vest can ride up or slip off when you hit the water.

Find your size
Measure around the fullest part of your chest, under your arms, then check your weight:

S: 92 cm chest, 40–60 kg
M: 100 cm chest, 60–70 kg
L: 104 cm chest, 70 kg+
XL: 112 cm chest, 70 kg+
2XL: 118 cm chest, 70 kg+
3XL: 125 cm chest, 70 kg+
4XL: 145 cm chest, 70 kg+

Between sizes? Try both on over whatever you ride in. Zip it, clip the buckle and get a mate to lift it at the shoulders: it shouldn't ride up past your chin or ears.

Tested. Trusted. Australian Certified.

Approved to Australian Standard AS 4758. The Red, Yellow, Orange and Charcoal/Orange are Level 50; the Black and Blue are Level 50S. They float the same; Level 50 comes in high-vis colours so you're easier to spot.

On the ski
Level 50S is accepted on a jet ski on smooth and enclosed water (rivers, lakes, dams and sheltered bays) in every state. Queensland requires Level 50 on a jet ski in partially smooth and open water, and Tasmania requires Level 100 or above beyond sheltered water.

Check your state
Our jet ski life jacket guide covers each state's rules.

Look after it
Rinse it in fresh water after every sesh, dry it out of the sun, keep it away from fuel and store it hung up, not crushed under the esky. Check the zip, buckle and foam before you ride, and replace it if it's torn, crushed or badly faded.

Not the Right Fit? No Stress

We’ve got your back. If your new Jetpilot gear doesn’t fit right, isn’t what you expected, or turns up faulty, no stress - you can send it back or swap it out. You’ve got 21 days from purchase to return it, and we’ll sort you with a refund or exchange.

More info can be found here at returns & exchanges

Questions riders ask

Are all the colours the same vest?

Same cut, foam and Hidden Supergrip handles. The Red, Yellow, Orange and Charcoal/Orange are Level 50 high-vis, with a Flex Lite Ultra neoprene shell and EcoPrene lower panels. The Black, Blue and Grey are Level 50S, in 100% EcoPrene. Both levels float the same.

What size do I need?

Measure around the fullest part of your chest, under your arms, and match it to the chart under Find my size: S is for a 92 cm chest, 4XL for 145 cm. It's cut straight through the body, and the waist buckle pulls it snug so it stays put. Snug when it's dry is right; it settles in once it's wet.

Can a passenger hold on?

Yes. Hidden Supergrip handles give your passenger something solid to hold, so they're not hanging on to you, and they tuck away when you ride solo.

Is this vest legal on a jet ski in my state?

This colourway is Level 50S, approved to Australian Standard AS 4758. Level 50S is accepted on a jet ski on smooth and enclosed water (rivers, lakes, dams and sheltered bays) in every state. Queensland requires Level 50 once you're past smooth water, and Tasmania requires Level 100 or above beyond sheltered water. Rules change by state, so check yours before you launch. Our guide covers each state.

What's the difference between Level 50 and Level 50S?

They float the same. Level 50 comes in high-vis colours, so you're easier to spot, and it's the one Queensland requires past smooth water. Level 50S comes in every other colour and is the ski, wake and tow vest on smooth water in every state. Neither will turn you face-up on its own, so both are for riders who can swim, with help close by.

Is this an impact vest?

No. It's a lifejacket, approved to AS 4758 and tested to keep you afloat. An impact vest without an AS 4758 level mark isn't a lifejacket, so it doesn't count where one is required on the ski or behind the boat.

What if the size is wrong?

Swap it or send it back for a refund within 21 days of purchase. Sale items are the exception. Returns and exchanges has the steps.

How do I look after it?

Rinse it in fresh water after every sesh, dry it out of the sun, keep it away from fuel and store it hung up, not crushed under the esky. Check the zip, buckle and foam before you ride, and replace it if it's torn, crushed or badly faded.

Not Sure What You Need?

Hit us up! - We'll point you in the right direction and get you sorted with the right gear.

Jetpilot Cause Life Jacket - Blue

$209.99 AUD

Free Standard Shipping* Aus Wide Orders $200+

Jetpilot Australia | CauseBlue PDPCollectionBanner Desktop

The Cause Life Jacket Series

The Cause is Jetpilot's best-selling life jacket. First designed for jet ski recreation and now worn across all kinds of watersports, it does the basics well: lighter EcoPrene, low-profile Freelite foam, a quick PK Lok zip and Hidden Supergrip handles for a passenger. It's the vest riders keep coming back to, season after season.

Made With

Ecoprene

Ecoprene is our next-gen material crafted from recycled plastic bottles - lightweight, ultra-soft, and tough where it counts. It delivers long-lasting comfort without sacrificing strength, and just like traditional neoprene, it’s water-resistant and ready for the elements.

What Hits Different

Jetpilot Australia | JetpilotAusStandards

Lighter EcoPrene

Jetpilot's neoprene alternative, rated 30% lighter than traditional neoprene. The Black and Blue are EcoPrene all over; the Red, Yellow and Orange colours pair it with Flex Lite Ultra neoprene up top.

Jetpilot Australia | SupergripHandles CauseBlue

Handles When You Need Them

Hidden Supergrip handles zip out when you've got a passenger, giving them something solid to hold without hugging you. Tuck them away when you're riding solo, so there's nothing to flap or snag.

Low-Profile Foam

Freelite foam with bevelled edges keeps the profile low, so there's less bulk between your arms and the bars.

4.9

Rated 4.9 out of 5 stars

Based on 188 reviews

99%would recommend these products

SizingRated -0.1 on a scale of minus 2 to 2

DesignRated 4.8 on a scale of 1 to 5

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I like the look and feel of the jacket and nice pockets haven't had the chance to use it yet
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