WETSUIT GUIDE

A wetsuit should do more than keep you warm. It should help you swim more efficiently, conserve energy and exit the water ready to perform. At Zone3, every wetsuit is designed to support natural body position, reduce drag and allow unrestricted movement, whether you’re lining up for your first race or chasing marginal gains at the front of the field.

This guide brings together how our wetsuits work, how they’re tested, and how to choose the right one for your goals.

Nearly all swimmers benefit from the same fundamentals in the water: improved body position, reduced resistance and freedom of movement.

Zone3 wetsuits are developed to:

  • Lift the body into a more efficient swimming position
  • Reduce drag through the water
  • Allow a natural, unrestricted stroke
  • Conserve energy over distance

The result isn’t just speed, it’s efficiency. Swimming with less effort means more energy available for the bike and run, or simply more confidence and comfort in open water.

Tested where
it counts

Zone3 wetsuits have been independently tested at Loughborough Sport, one of the world’s leading centres for human performance, to understand how wetsuit design influences swim speed, efficiency and physiological load.

Controlled testing with beginner, intermediate and advanced triathletes confirmed measurable improvements across the range, with performance gains increasing progressively by wetsuit tier. The results support what athletes experience in the water: when a wetsuit is matched to ability and goals, you can swim faster with less effort.

It really gave me confidence in the water

I can't recommend this wetsuit highly enough, as my first open water wetsuit it really gave me confidence in the water and push towards my triat... Read More

I can't recommend this wetsuit highly enough, as my first open water wetsuit it really gave me confidence in the water and push towards my triathlon goals.

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Callum K

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Absolute revelation!

My first 'swim' wetsuit after using standard wetsuits. Absolute revelation! easy to get on and off, warm even in April UK waters (with neoprene ... Read More

My first 'swim' wetsuit after using standard wetsuits. Absolute revelation! easy to get on and off, warm even in April UK waters (with neoprene swim cap). Flexible so no impact on my technique. Love it.

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Warren P.

Active-Flex Wetsuit

Active-Flex Wetsuit

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zone 3 advance wetsuit fits perfectly

Having previously tried other brands which I won’t name zone 3’s advance wetsuit is the best for fit being true to size and performance being gr... Read More

Having previously tried other brands which I won’t name zone 3’s advance wetsuit is the best for fit being true to size and performance being great. I’m quite large build and have big shoulders so have found issues with other wet suits, zone 3 advance wetsuit fits perfectly over shoulders with no issues with zipping up. I also used to complete Deva T100 triathlon and it is smooth to remove in transition. I would highly recommend zone 3 to anyone completing OWS or Triathlons, best brand around

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David W.

Advance Wetsuit - ZONE3 UK

Advance Wetsuit

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I love my Agile Wetsuit!

I love my Agile Wetsuit! It is very comfortable to swim in and as easy as a wetsuit will ever be to get on! I LOVE THE PINK ON IT! It seems to b... Read More

I love my Agile Wetsuit! It is very comfortable to swim in and as easy as a wetsuit will ever be to get on! I LOVE THE PINK ON IT! It seems to be very well designed for an entry level wetsuit.

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Lynne B.

Agile Wetsuit - ZONE3 UK

Agile Wetsuit

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I had struggled before with getting the perfect fit

Really pleased with my new Advance suit. I had struggled before with getting the perfect fit from other brands but have found that this suit is ... Read More

Really pleased with my new Advance suit. I had struggled before with getting the perfect fit from other brands but have found that this suit is really well made and great to swim in. Usually an M but picked the ML based on weight.

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Richard

Advance Wetsuit - ZONE3 UK

Advance Wetsuit

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Compare Wetsuits

Use the comparison guide below to see how buoyancy, flexibility and materials differ across the range, and find the wetsuit that matches your needs, not just your budget.

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