Highest Rated Triathlon Brand
Rated Best Wetsuit of All Time
Kings Award
Queen's Award
Athlete Approved
Performance proven
Cold Water Kit
Cold Water Kit
Cold water does not have to end your season.
Neoprene Accessories
Neoprene Accessories
Designed to extend comfort, warmth, and control in the water.
Wetsuits
Wetsuits
Designed by athletes and refined through years of product development.
Goggles
Goggles
Designed to deliver clarity, comfort, and confidence in the water.
Triwear
Triwear
Designed to perform across swim, bike, and run.
New Arrivals
New Arrivals
The latest in performance. Explore our newest wetsuits, triwear, and swimwear innovations.
Accessories
Accessories
Designed to support training, racing, and time spent in and around the water.
Goggles
Clarity. Comfort. Performance. Anti-fog, UV-protected goggles for every swim, in the pool and open water.
Advance Thermal Wetsuit
A fleece-lined wetsuit that holds body heat through cold water while keeping your stroke free.
Available Sizes:
S
ST
SM
M
MT
ML
L
XL
XXL
Advance Thermal Wetsuit
A fleece-lined wetsuit that holds body heat through cold water while keeping your stroke free.
Available Sizes:
XS
S
ST
SM
M
ML
L
XL
Heat-Tech Swim Gloves
Tthese gloves ensure your hands stay warm during colder off-season swims, without compromising your mobility
Available Sizes:
XS
S
M
L
Heat-Tech Swim Socks
These innovative swimming socks are some of the warmest available on the market
Available Sizes:
S
M
L
Heat-Tech Dura Swim Boot
The Heat-Tech Dura Swim Boot is a 4mm wetsuit boot with a textured rubber sole for wet rock and shingle.
Available Sizes:
UK4
UK5
UK6
UK7
UK8
UK9
UK10
UK11
UK12
Heat-Tech Swim Cap
Our Neoprene Heat-Tech Warmth Swim Cap offers fleece-lined insulation while maintaining optimal hydrodynamics
Available Sizes:
S
M
L
Thermotech Changing Robe
Built to endure the harshest weather, the Thermo-Tech Changing Robe provides unbeatable warmth and protection
Available Sizes:
S
M
L
XL
Wetsuit Changing Mat
The new changing mat from ZONE3 is the essential open water accessory
Advance Thermal Wetsuit
A fleece-lined wetsuit that holds body heat through cold water while keeping your stroke free.
Available Sizes:
S
ST
SM
M
MT
ML
L
XL
XXL
Advance Thermal Wetsuit
A fleece-lined wetsuit that holds body heat through cold water while keeping your stroke free.
Available Sizes:
XS
S
ST
SM
M
ML
L
XL
Heat-Tech Swim Gloves
Tthese gloves ensure your hands stay warm during colder off-season swims, without compromising your mobility
Available Sizes:
XS
S
M
L
Heat-Tech Swim Socks
These innovative swimming socks are some of the warmest available on the market
Available Sizes:
S
M
L
Heat-Tech Dura Swim Boot
The Heat-Tech Dura Swim Boot is a 4mm wetsuit boot with a textured rubber sole for wet rock and shingle.
Available Sizes:
UK4
UK5
UK6
UK7
UK8
UK9
UK10
UK11
UK12
Heat-Tech Swim Cap
Our Neoprene Heat-Tech Warmth Swim Cap offers fleece-lined insulation while maintaining optimal hydrodynamics
Available Sizes:
S
M
L
Thermotech Changing Robe
Built to endure the harshest weather, the Thermo-Tech Changing Robe provides unbeatable warmth and protection
Available Sizes:
S
M
L
XL
Wetsuit Changing Mat
The new changing mat from ZONE3 is the essential open water accessory
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.
Meet the Athletes
Powered By Zone3
