Triathlon
men's fjord 4.0
the Fjord 4.0 represents the next evolution in wetsuit innovation and performance development by deboer. building on the success of its predecessor, the Fjord 4.0 incorporates cutting-edge advancements...
why it feels tight: on dry land a right-size wetsuit feels firmly snug — like a handshake everywhere. In the water it eases and disappears. It’s only too small if you can’t breathe deeply or raise your arms overhead.
what buoyancy means: built-in float. This suit lifts your hips and legs so you stop dragging them — for most first-timers that’s worth more than months of training.
putting it on: dry skin, go slow, and use fingertip pads — never nails. Nail nicks are the #1 wetsuit injury.
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Free backpack with every wetsuit
Added to your bag automatically — pick your colour there. While stocks last.
- single-seam front panel — less drag, nothing to fail
- buoyancy mapped to the hips for a flat, fast line
- thin, mobile shoulders that never fight your catch
built around one idea: get out of the way.
specifications.
| Construction | single-seam front panel |
|---|---|
| Buoyancy | high · 4mm core & hips |
| Shoulder panel | 1.5mm for free rotation |
| Neoprene | HBS neoprene 41 SCS |
| Best for | triathlon · open-water racing |
| Water temp | 14–24°C / 57–75°F |
| Cut | men's & women's |
get the fit right.
a wetsuit should feel snug on land and it eases the moment you're in the water. any looseness becomes a fold, and every fold scoops water and adds drag.
not sure on size? our fit team will confirm it from two photos before your first swim.
The moment you push off, the suit disappears. That's the whole point.
Kristian Blummenfelt · DeBoer Athlete
what swimmers say.
First open-water race in it and I forgot I was wearing a wetsuit. Hips sat higher the whole swim.
Marcus T. · Verified · 70.3 racer
The shoulders are unreal — zero restriction on the catch. Came out of the water faster and fresher.
Priya N. · Verified · Open-water
Sizing help over email got me into the right size first try. No fold, no flush, no drama.
Erik L. · Verified · First wetsuit