The Waterproof D3 Ergo men’s drysuit is built around lightweight, flexible trilaminate fabric and a streamlined fit. It is a useful choice when freedom of movement and manageable packing weight are priorities, with replaceable silicone seals, practical pockets and reinforced knees for regular scuba diving.
Features and benefits
- Lightweight trilaminate shell: the soft three-layer fabric provides the dry barrier while allowing you to choose undergarments for the water conditions. The shaped torso and limbs reduce unnecessary bulk.
- YKK plastic back dry zip: a flexible main closure sits across the back. Keep the sealing surfaces clean and check that the zip is fully closed before diving.
- Lightweight leg pockets: two accessible pockets carry suitable essentials without adding heavy external storage.
- Reinforced knees: Kevlar knee areas resist abrasion and have pockets for optional protective padding.
- Soft boots and a grippy seat: the lightweight boots reduce bulk around the feet, while the seat treatment helps prevent slipping when seated on a boat.
- Replaceable silicone seals: the SI TECH Quick Neck and QCS wrist rings retain the seals mechanically, allowing compatible worn or damaged seals to be replaced without gluing a new seal directly to the suit.
- Warm Neck and Warm Cuffs: outer neoprene covers reduce water movement around the neck and wrists and help protect the seals. The cuffs can be detached when your setup requires it.
- SI TECH valves: a swivelling inlet lets the inflation hose sit conveniently; the adjustable automatic exhaust controls release of suit gas during a properly managed ascent.
What is included
The suit is supplied with SI TECH valves, a low-pressure inflation hose, a Waterproof carry bag, suspenders and a spare silicone seal kit. A seal tool is included.
Dry-glove compatibility
The fitted neck and wrist systems accept specific replacement seals. Original Ultima/standard Ultima Twist compatibility depends on the wrist-ring size: larger rings on 3XL and 3XL/t+ suits do not accept the standard system directly. Confirm the ring system before buying dry gloves.
Technical specifications
| Model | D3 Ergo men’s drysuit |
|---|---|
| Shell | Lightweight flexible trilaminate |
| Main closure | YKK plastic back dry zip |
| Neck system | SI TECH Quick Neck with silicone seal |
| Wrist system | SI TECH QCS rings with silicone seals |
| Storage | Two lightweight leg pockets |
| Valves | SI TECH swivelling inlet and adjustable automatic exhaust |
| Colour | Black/green |
| Reference weight | 4.1kg for men’s size M; varies by size |
Fit and use
Choose your size with the intended undergarments on and check that you can reach your valves, bend your knees and bring your arms across your chest. Boot fit and seal fit also matter. Drysuit training, correct inflation and venting, and checks before every dive are essential. Ask our Hallam team if you need help with sizing or compatibility.
Care
Rinse the exterior after use, keep sand and grit out of the valves and dry zip, and dry fully before storage. Protect the silicone seals from sharp nails and jewellery. Use the lubricant specified for the fitted zip and follow the Waterproof drysuit manual for cleaning, storage and servicing.
Ordering information
Special-order product, with an estimated 3–6 week lead time. Confirm your size and current availability before ordering.
























