How to Order & Customize Your Fourth Element Drysuit
Step 1：
Choose Your Base Drysuit
Explore the Drysuits category and select your preferred suit based on fabric type (Flex for maximum mobility, Stealth for heavy-duty durability, or Stealth Hybrid for the best of both).
Choose between Standard Sizing or full BioMap® Custom Tailoring and add the suit to your cart.
Step 2：
Select Your Factory Upgrades
Scroll down to select your Factory Upgrades, including neck seals, wrist systems, valves, boots or socks, pockets, and other available options.
Note: Review each upgrade before checkout. If you prefer the original build, select the $0 Standard / Default option where available.
Step 3：
Checkout & Verification
Once all your items are in the cart, proceed to checkout. For custom BioMap® suits, our team will contact you to schedule your 3D scan and verify all technical specs!
Choose Your Fourth Element Drysuit
Engineered for divers who prioritize zero restriction underwater, the Argonaut 3.0 Flex offers unprecedented mobility without sacrificing performance. Utilizing Fourth Element's exclusive lightweight Flex trilaminate fabric, this suit feels remarkably soft both in and out of the water.
The tailored 3.0 ergonomic cut drastically reduces fabric bulk, allowing effortless shoulder reach for valve drills and smooth finning. It’s designed to minimize fatigue on long, demanding cold-water dives, making every dive feel effortless.
Key Features:
Ultra-Flexible Trilaminate: Lightweight Flex material for superior softness and maximum agility.
Unrestricted Upper Body Mobility: Optimized sleeve and shoulder patterns ensure effortless reach to tank valves.
Streamlined Cut: 3.0 anatomical pattern reduces drag and excess air movement inside the suit.
Custom & Standard Options: Available in standard stock sizing or made-to-measure BioMap® custom fit.
The best-selling drysuit in the Fourth Element lineup. The Argonaut 3.0 Stealth Hybrid intelligently maps two premium materials together: ultra-tough Stealth fabric across the high-wear torso and shoulder areas, paired with supple Flex fabric through the legs and articulation points.
This hybrid construction gives you the heavy-duty protection needed for rugged dive environments alongside the incredible flexibility required for effortless finning and gas management. It is the definitive all-around choice for serious cold-water divers.
Key Features:
Hybrid Material Mapping: Stealth fabric on high-wear areas + Flex fabric for smooth movement.
The Best-Seller: Combines maximum durability with total athletic range of motion.
Optimized Body Geometry: Designed to eliminate extra drag and improve trim in the water.
Custom & Standard Options: Available in standard stock sizing or made-to-measure BioMap® custom fit.
Built to handle the absolute toughest marine environments, the Argonaut 3.0 Stealth is the gold standard for technical and exploration divers. Constructed from high-tenacity Stealth trilaminate fabric, this drysuit delivers industry-leading resistance against abrasions, punctures, and heavy wear
Whether you are squeezing through tight cave restriction, navigating sharp wreck metal, or conducting commercial training, the Stealth provides an impenetrable barrier against the elements while maintaining a sleek, professional fit.
Key Features:
Heavy-Duty Stealth Fabric: Military-grade nylon/butyl trilaminate built for brutal friction and tear resistance.
Exploration-Ready Protection: Reinforced construction designed for technical, wreck, and cave diving.
Ergonomic Mobility: Articulated patterning allows athletic movement despite the suit's heavy-duty armor.
Custom & Standard Options: Available in standard stock sizing or made-to-measure BioMap® custom fit.
Step 2 — Select Your Factory Upgrades
Please select your choice of wrist seal. Latex and neoprene are offered alongside several replaceable wrist-seal systems, all of which can be worn with drygloves.
Please select your choice of neck seal. Latex and neoprene are offered, alongside the Si-Tech Quick Neck system which allows a quick and easy change of silicone neck seal.
Sitech Neck Ring System：
The shape and size of this ring system can be very pronounced on smaller suits, and some customers have found the system uncomfortable on their shoulders. Therefore, for petite customers, we would recommend an alternative neck seal option.
We are pleased to offer Apollo and Si-Tech Valves.
The Si-Tech valves come with the ‘Balder’ push-to-fit rubber hose, designed to be used for low dexterity (such as wearing thick drygloves). Boasting excellent responsiveness to small changes in pressure, the ‘Shell’ inflate valve and ‘Argo’ dump valve offer precise control and low profile. Made in Sweden.
Apollo Bio-Valves. These valves, designed and manufactured by Apollo in Japan and are low profile, intuitive to operate and simple to maintain, even in the field. Activated with highly responsive side mounted levers in both cases, the inflate valve needs a gentle squeeze rather than push onto the chest. To manually operate the exhaust valve, the wearer can simply slide a hand up the arm to touch the edge of the valve. The Apollo valves come with a Hydpro PU-coated braided hose.
Add your personalised Velcro name badge(s) to one or both pockets. Max. 15 characters, white text, all CAPS. Dimensions 10cm x 2.5cm.
Opting for a p-valve offers comfortable relief when on longer dives. The p-valve can be mounted to either leg.
Note: The She-P system requires a installed P-Valve on your drysuit to operate. Please ensure you add a P-Valve option to your order if your suit does not currently have one installed.
The She-Pee kit allows comfortable relief when diving and comes with adhesive remover wipes.
Our Standard and Tech Dryboots come with ergonomic insoles to help augment the fit and comfort of your boots. All our boot/sock options allow room for a Xerotherm sock underneath.
IMPORTANT – if you are between sizes, or plan on wearing thicker socks, we recommend sizing up.
Two generous pockets are included as standard with each Argonaut drysuit. Each pockets contains two bungee loops inside the main pocket along with a wetnotes sleeve and a D-ring. The outer zipped mini pocket contains two further bungee loops. Customers can opt to have just one or no pockets. At 3.5l volume per pocket, Argonaut pockets are one of the biggest pockets offered on the market.
Each Argonaut comes with a neoprene diving hood, free of charge. Please select your hood type and size. If between sizes, we recommend sizing up.