Men's Proteus II 3mm Wetsuit
Proteus II Wetsuit 3mm – Unmatched Warmth & Performance
Eco-friendly limestone neoprene | Hexcore & Thermoflex lining | Semi-dry seal system
The Proteus II 3mm delivers superior thermal performance with minimal bulk, outperforming many 5mm wetsuits while maintaining exceptional flexibility.
This advanced 3mm dive wetsuit combines cutting-edge insulation technology with sustainable materials to keep you warm and comfortable on every dive.
Built with eco-conscious construction using limestone neoprene, Eco Carbon Black from recycled rubber tyres, and water-based Aqua-X glues. The Proteus II reduces CO₂ emissions and eliminates harmful substances without compromising performance.
Advanced sealing technology including the Hydrolock neck seal, Glideskin wrist seals, and internal PU ankle seals minimizes water ingress for a genuine semi-dry experience.
Double glued, blind-stitched, and taped seams maximize insulation efficiency. Hexcore lining across the torso provides targeted core warmth during extended dives, while Thermoflex lining throughout the suit enhances overall thermal retention.
Engineered for divers who demand premium warmth, durability, and environmental responsibility in a lightweight, flexible package.
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Fourth Element Size Charts – Full (Excl. Argonaut)
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Fourth Element wetsuits
Combining super thermal Hexcore lining with an innovative double neck seal, the Proteus II is our highest performing dive wetsuit and the choice of many dive professionals around the world. Made from a more eco friendly limestone neoprene using recycled car tyres and water based glues, not compromising on performance.
Features
Proteus II - extra warm
Hydrolock neck system
A second, over-head closure to minimise water ingress.
Taped seams
As well as being glued and stitched, taping ensures seals are waterproof.
Glideskin wrist seals
Create a barrier at the wrist to prevent water entering.
Hexcore torso lining
Plush lining on the core for prolonged water exposure.
Recycled Rubber
One of the key ingredients of neoprene, Eco Carbon Black, is recycled by our wetsuit factory from post-consumer scrap tyres. This significantly reduces energy consumption and cuts CO2 emissions by 200g per wetsuit.
Limestone Neoprene
During the neoprene production process, limestone is used to replace petrochemicals to form rubber chips. You achieve the same performance as traditional neoprene, but with way less environmental impact.
Resources
After the neoprene creation process, the redundant trimmed materials will be recycled and reused in the mixing process to produce more neoprene sheets. Overall huge amounts of raw materials are saved, energy consumption is reduced and waste water and air emissions are minimised during production.












































