Fourth Element Undersuits
Fourth Element Undersuits – Stay Warm Below the Surface
Cold water diving can be challenging. Even the best drysuit cannot keep you comfortable without the right thermal protection. That’s where Fourth Element undersuits come in. Designed for divers who demand performance and reliability, these technical layers help you stay warm, dry and focused on the adventure.
The Problem
Without proper insulation, body heat escapes quickly at depth. Bulky layers restrict movement and poor-quality fabrics degrade fast, leaving you cold and uncomfortable.
The Solution
A Fourth Element undersuit uses advanced fabrics and smart design to deliver warmth without bulk. The Arctic range combines high insulation with low profile comfort, while the Xerotherm undersuit range offers lightweight thermal protection ideal for layering. Both systems wick moisture away from the skin, keeping you dry even during long dives.
These undersuits are engineered for durability, resisting wear and washing so they last season after season. Fourth Element also leads the way in sustainability with its Ocean Positive initiative, creating gear that protects the planet as well as the diver.
Why Divers Choose Fourth Element
Trusted by professionals worldwide, Fourth Element combines innovation with comfort. Pair your undersuit with Fourth Element diving masks for crystal-clear vision. Discover more Fourth Element gear to complete your kit.
FAQs About Fourth Element Undersuits
What is the difference between Arctic and Xerotherm undersuits?
Arctic undersuits provide maximum insulation for extreme conditions, while Xerotherm offers lightweight warmth for layering or milder dives.
Can I wear a Fourth Element undersuit under any drysuit?
Yes. These undersuits are compatible with neoprene and membrane drysuits.
Do Fourth Element undersuits dry quickly?
Yes. Both ranges use fast-wicking fabrics that keep moisture away from your skin.
Are Fourth Element undersuits environmentally friendly?
Absolutely. Fourth Element is committed to sustainability through its Ocean Positive initiative.

Our Best Selling Products
Showing all 30 results
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Fourth Element Arctic Drysuit Socks Unisex 2024
From:£39.00£35.00 Add to basket This product has multiple variants. The options may be chosen on the product page -

Fourth Element Arctic Mens Undersuit One Piece 2024
£315.00£296.00 More Information This product has multiple variants. The options may be chosen on the product page -

Fourth Element Arctic Mens Undersuit Leggings 2024
£159.00 Add to basket This product has multiple variants. The options may be chosen on the product page -

Fourth Element Arctic Mens Thermal Undersuit Top 2024
£165.00£159.00 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Arctic / Xerotherm Bag – Organic Cotton Drawstring Thermals Bag
£9.99 Add to basket -

Fourth Element Arctic Bag – Drawstring Bag To Store Your Arctics In
£8.99 More Information -


Fourth Element Arctic Drysuit Socks Unisex
£35.00£26.25 Add to basket This product has multiple variants. The options may be chosen on the product page -
On SaleSale!%Off24Save £1010£24%10£
Fourth Element Hotfoot Drysuit Thermal Socks – Ocean Positive
£42.00£32.00 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Arctic Hat – Winter Hat With Ear Warmers
£60.00 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Ladies Arctic Undersuit Top
£140.00£109.99 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Arctic Ladies Undersuit Leggings
£140.00£109.99 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Arctic Mens Undersuit Top
£140.00£109.99 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Arctic Mens Undersuit Leggings
£140.00£109.99 Add to basket This product has multiple variants. The options may be chosen on the product page -
On SaleSale!%Off38Save £6060£38%60£Fourth Element Arctic Expedition Ladies Leggings
£159.99£99.99 More Information This product has multiple variants. The options may be chosen on the product page -
On SaleSale!%Off37Save £5959£37%59£Fourth Element Arctic Expedition Mens Leggings
£159.00£99.99 More Information This product has multiple variants. The options may be chosen on the product page -
On SaleSale!%Off37Save £5959£37%59£Fourth Element Arctic Expedition Ladies Top
£159.00£99.99 More Information This product has multiple variants. The options may be chosen on the product page -
On SaleSale!%Off37Save £5959£37%59£Fourth Element Arctic Expedition Mens Top
£159.00£99.99 More Information This product has multiple variants. The options may be chosen on the product page -

Fourth Element Xerotherm Bag – Drawstring Nylon Bag
£6.95 More Information -


Fourth Element Xerotherm Gloves
£38.00 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Xerotherm Mens 3 Piece Set – Top + Leggings + Socks
From: £260.00 Add to basket -

Fourth Element Xerotherm Mens Leggings – Thermal Undersuit Leggings
£122.00 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Xerotherm Mens Top
£122.00 Add to basket This product has multiple variants. The options may be chosen on the product page -

Fourth Element Xerotherm Mens Vest
£46.50 More Information This product has multiple variants. The options may be chosen on the product page -


Fourth Element Xerotherm Women’s Leggings – Thermal Drysuit Leggings
£122.00 Add to basket This product has multiple variants. The options may be chosen on the product page -


Fourth Element Xerotherm Women’s Top – Thermal Drysuit Top
£122.00 Add to basket This product has multiple variants. The options may be chosen on the product page -

Fourth Element Xerotherm Women’s Vest
£46.50 More Information This product has multiple variants. The options may be chosen on the product page -


Fourth Element Xerotherm Womens 2 Piece Set – Top + Leggings
From: £244.00 Add to basket -


Fourth Element Xerotherm Womens 3 Piece Set – Top + Leggings + Socks
From: £276.00 Add to basket -

Fourth Element Xerotherm Wrist Warmers
£38.00 More Information This product has multiple variants. The options may be chosen on the product page -


Fourth Element Xerotherms Socks
£30.00 Add to basket This product has multiple variants. The options may be chosen on the product page
Showing all 30 results






























