Man crying in a colourful Zone3 Trisuit and cap with dry grass field landscape in the background Man running in a black Zone3 Trisuit and cap with dry grass field landscape in the background

Athlete-Approved. Performance Proven.

Fresh Season: Fresh Kit

The SS26 arrivals introduce updated colours, refined fits and athlete-led improvements across core training staples.

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Athlete Approved
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Wetsuits - ZONE3 UK

Wetsuits

Designed by athletes and refined through years of product development.
Mens Womens

Performance. Backed by evidence

Independent testing at Loughborough Sport evaluated three athletes — beginner, intermediate, and advanced — across four 750 m swims each, with and without Zone3 wetsuits. 

Averaged results demonstrated measurable improvements in efficiency, speed, and physiological response across all suits, with outcomes varying by individual. 
Results by wetsuit the detail

Vanquish-X Wetsuit

Women's Wetsuits

Vanquish-X Wetsuit

The new Vanquish-X takes performance to a completely new level. Highly regarded as one of the best triathlon wetsuits in the world, the key selling features of the Vanquish have not changed. This wetsuit is designed for triathletes looking to get the most out of their performance and feeling fresh before getting on the bike.

Available Sizes:
XS S ST M L XL
$1,345.00


Person swimming in the sea. Wearing a ZONE3 wetsuit, black swim cap and orange goggles
Person wearing a pink swim cap, racing swim goggles and a black sleeveless swimsuit. They are standing by a body of water.
About Us

Zone3 exists to help people perform in the water, designing athlete-approved products that support confidence, progression and performance across swim and triathlon.

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Our Innovation

Innovation at Zone3 is driven by performance, developed through testing, refined in the water, and designed to help athletes move faster, further and with greater efficiency.

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Our Responsibility

From materials to manufacturing, we make considered choices to reduce impact while maintaining the performance, durability and confidence athletes expect.

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Person wearing a Zone3 wetsuit with a scenic background

CASPER STORNES CHOOSES ZONE3

Casper Stornes is the reigning Ironman World Champion, the most respected title in triathlon.

Meet Casper
Meet the Athletes
Powered By Zone3
Casper Stornes
Katrine Græsbøll Christensen
Kieran Lindars
Rebecca Anderbury
Marta Sanchez Hernandez
Matthew Collins
Laura Addie
Eloise Du Luart
Jess Fullagar
Tom Davies
Mimi Carlton
Sarah Jane Goodwin
Joep Staps
Man wearing a wetsuit standing by a body of water with mountains in the background
Casper
Stornes
Person applying tape to their wrist at an event with a dark background
Katrine Græsbøll
Christensen
Kieran
Lindars
Rebecca
Anderbury
Person in a wetsuit running on a beach with a crowd in the background
Marta
Sanchez Hernandez
Matthew
Collins
Laura
Addie
Woman with a bike in a scenic outdoor setting
Eloise
Du Luart
Jess
Fullagar
Tom
Davies
Person wearing a purple cycling jersey with 'Nebula' branding in an indoor cycling track setting.
Mimi
Carlton
Woman wearing a pink sports jersey with visible branding on a gray background
Sarah Jane
Goodwin
Joep
Staps
New In

Ascend Sleeveless Wetsuit

Sleeveless Wetsuits

Ascend Sleeveless Wetsuit

The Ascend Sleeveless Wetsuit is an entry-level sleeveless triathlon wetsuit engineered to give swimmers dependable performance from their first open-water sessions onward. Built with a balanced neoprene profile and a streamlined sleeveless cut perfect for warmer weather, it offers freedom of movement, consistent buoyancy, and controlled efficiency.

Available Sizes:
S M L XL XXL
$295.00