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900 Stretch Neoprene Surfing Full Wetsuit Chest zip 4/3mm Men

Sale price: $199.00 Regular price: $249.00

This wetsuit offers optimal thermal comfort in cold water. Its flexibility gives you excellent freedom of movement. Keeps you protected for sessions up to 3 hours.

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This product runs small

Sale price: $199.00 Regular price: $249.00

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Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8504145

Product Videos

Product Features

900 Stretch Neoprene Surfing Full Wetsuit Chest zip 4/3mm Men | Our team of designers has developed a wetsuit that is perfectly suited to surfing and bodyboarding in cold water (54°F to 63°F) for up to 3 hours

This wetsuit offers optimal thermal comfort in cold water. Its flexibility gives you excellent freedom of movement. Keeps you protected for sessions up to 3 hours.

A photo of the 900 Stretch Neoprene Surfing Full Wetsuit Chest zip 4/3mm Men in use

Freedom of movement

Stretch component on arms and shouldersDiagonal front zipper. Minimal stitching

Easy to put on

Diagonal front zipper


Glued and blind stitched 4 and 3 mm neoprene + taped seams

Irritation reduction

all of the seams are taped on the inside for increased comfort

Quick dry

Synthetic lining

Product Customer Reviews

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399 Reviews
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900 Stretch Neoprene Surfing Full Wetsuit Chest zip 4/3mm Men,black
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Excellent surfing wetsuit (never cold again)

Bought this wetsuit and used it a couple of days in Seaside (Oregon) during the labor day week-end. I called it "never cold again". I used it with hood, gloves and booties, and I was able to stay in the water without any discomfort due to cold water. It fits true to size, so Medium is a real medium (think European sizing). Definitively recommend this product.

The quality of the material isn’t good enough

Being a GBS seam and chest-zip 4.3mm wetsuit, it fits well and keeps warm. But the material quality isn’t good enough for a product like this. The Neoprene at the neck area a starts to tear after only several time’s uses in 2 weeks. I’ll have to take it back to the shop for exchange.

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Men’s wetsuit

Bought for my husband so he could swim in the bay during winter. Perfect

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great suit, great price

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Got this on the sale. I've had a few different winter wetsuits. This is by far the best. Quality, comfort ad movement. The only negative thing I can say is the zip across the chest can be hard to zip. Needed an extra spare pare of hands to assist me.

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neoprene wetsuit

excellent for SUP and for kayaking

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Great fit

I'm 5 foot 10 and 84kg and with a moderately muscly build. I do not fit into a size Large. I fit very nicely into an XL. If you're in doubt about the size get what you think is right and a size larger and try both on. Size Large is far too difficult for me to fit into compared to XL.

Comfy and very warm

Fits well and is relatively easy to put on. This wetsuit is less restrictive than others I have tried. Kept me warm in November UK waters. highly recommend

Great suit

Great fitting suit at a great price. I'm 6ft1 about 90kgs and this fits so well. The first couple of times was a bit tight but now easy to get on & off. Fits really tightly and been out surfing for 2hr sessions and could stay out for longer.

Good fit

Normally a MT or M but L as per size guide was spot on.

Superb suit and very good value

Normally I’m a Meduim or MT, but I ordered a large based on the decathlon size calculator. I was a bit nervous that it wasn’t going to fit, but it fit perfectly. It’s definitely smaller than other brands, then. The suit really kept me warm on a long surf, where my summer suit would be letting the cold in towards the end. I can see this suit getting a lot of use.

Excellent summer/autumn suit

An excellent, well made suit that keeps you very warm. The fit feels very tight around the shoulders when dry but soon loosens in the water. Build quality on par with my excel and e-bomb but nearly half the price. Dries quickly. It was actually too hot during the sunny days so had to keep flushing. Only improvement would be smooth skin chest and back for those windier, cooler days. Well worth the money. I will now be looking at a 3/2 for a trip to Lanzarote

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Hugs the body and so warm.

This wetsuit proves how Decathlon are listening to customer critiques and make improvements. The neck entry is greatly inproved, opening from only the left side. Entry is slightly more difficult (especially brand new), but water entry is reduced to almost zero. The ankle and wrist sections taper to increase tightness for a great seal. The new limestone-based neoprene is much warmer and I find even though this is a 4/3 has ease of movement like the summer 2018 3/2 model. In other words fits me like a glove and second skin. For a fit healthy male of 6ft, moderate musculature, the medium fits 100% perfect, no folds of voids anywhere. Was in water today for 5 hours at 11.2 Celsius. The real test now is the durability of this new limestone-based neoprene.

Gut und günstig

Ich habe diesen Surfanzug gekauft um zu Wakesurfen hinter dem Boot und für Foilen. Der Anzug ist sehr bequem und gibt warm. Ich kann euch diesen Anzug für sehr wenig Geld empfehlen. Ein Update folgt im neuen Jahr 2023.

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Nicht reingekommen...

Mit 59 offenbar zu alt, um bei diesen Einstieg und festem Material reinzukommen, obwohl leptosomer Astheniker, daher umgetauscht. Der eher pyknische Verkäufer bestätigte, dass der Ein/Ausstieg auch für ihn schwer sei, also unbedingt vorm Kauf ausprobieren, um generell Ärger zu vermeiden! Also: Gelenkig sein. Ansonsten guter Eindruck.... PS Um den richtigen Anzug zu finden, müsste er zielgenauer auf die verschiedenen Körpertypen zugeschnitten werden, leider fehlt dieser Ansatz durchweg, weshalb ein Kauf ohne Anprobe oder genaue Info dazu Glücksspiel ist, da bereits wenige Zentimeter Ungenauigkeit den Kälteschutz arg beeinträchtigen...

Hi Stephen!

Danke zuerst einmal für deine BEwertung des 900er Neoprenanzugs für Herren von Olaian!

Schade, dass er dir nicht gepasst hat. Wir als passionierte Surfer verschiedener Körpertypen wissen, wie schwer die Sache mit dem perfekt passenden Wetsuit ist - gerade bei Chest-Zip kann es etwas schwieriger sein reinzukommen.

Zwecks des Kälteschutzes hast du recht, aber genau wie andere Hersteller stehen wir vor dem Problem, dass nicht für jeden Körpertyp - sei es pyknisch, athletisch oder wie in deinem Fall leptosom - jeder Anzug passgenau sein kann. Da hilft leider nur anprobieren und austesten. Und das hat jeder irgendwann schon mal mitgemacht.

Wir wünschen dir auf alle Fälle viel Erfolg bei der weiteren Suche nach einem passenden Neopren und wollen uns nochmal für dein Feedback bedanken, denn ohne dieses könnten wir weder uns noch unsere Produkte weiter verbessern.

Wir hoffen dich aber auch weiterhin als Kunden bei uns begrüßen zu dürfen und wünschen dir eine schöne Restwoche!

mit sportlichen Grüßen



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Size Guide

Size Guide Visual

Additional Product Information


Foam: 100.0% Rubber - Chloropren (CR) ; Main fabric: 86.0% Polyamide, 14.0% Spandex ; Secondary lining: 91.0% Polyethylene Terephtalate, 9.0% Spandex

How to choose the right wetsuit (part 1)

The 1st selection criterion when choosing a surfing wetsuit is the water temperature. Water temperature varies according to the location and the time of the year. Systematically make sure that the water temperature at your spot corresponds to the recommended temperature range: Warm water above 68°F. Temperate water between 63 and 72°F. Cold water between 54 and 63°F. Very cold water between 45 and 54°F. Visit the site to find out the temperature of your spot.

How to choose the right wetsuit (part 2)

The 2nd criterion to take into account is the length of your sessions. If your sessions last less than an hour, the 100 models will be suitable. For up to 2 hours, opt for the 500 models, and for up to 3 hours, the 900 models. Compared to the 100 models, the 500 models will be warmer (and more watertight) and more efficient at reducing fatigue (more freedom of movement) and irritation. The same is true for the 900 models compared with the 500 models.NB: the 900 models are easier to put on.

Choose the right size

To make the most of the features of your wetsuit, it is necessary to choose the correct size. A surfing wetsuit should be a very tight fit and there should be no visible folds. When dry, it is perfectly normal to feel like it is too tight, this discomfort disappears as soon as the wetsuit gets wet. If you choose a wetsuit that is too big, folds will appear, you will experience irritation and thermal comfort will be reduced (letting in water).Try it on before you buy it!


This OLAIAN 900 4/3 wetsuit is made from genuine neoprene for improved comfort during use.The neoprene is lined with synthetic fabric for added resistance to wear.Neoprene thickness: 4 mm and 3 mm.The neoprene is made from an elastomer foam with insulating properties.We test and guarantee the quality of our neoprene materials.


The neck finish has been developed to limit irritation. According to the sensitivity of the wearer, a UV top can be worn under the wetsuit to reduce the risk of irritation. The application of grease (e.g. Vaseline) in friction areas (neck, underarms) is also recommended if wearing the wetsuit for long periods. Make sure the flap is always inside the wetsuit to limit the risk of irritation with the zipper and the neck.


Our zippers and fastenings are laboratory-tested in order to ensure an optimal lifespan and good resistance to salt water. We have put the zipper at the back of the wetsuit for more comfort during surf sports (when lying down to paddle).

Watertight assembly

The seams are stitched and glued for a watertight seal and durability. The seams are blind-stitched, which means the thread does not pass through the entire thickness of the neoprene and so prevents water from getting through. The absence of threads on the inside avoids irritation and chafing. Patches for comfort and reinforcement are strategically placed on the inside in sensitive areas.

Key pocket

There is a key pocket under the zipper flap

Anti-chafing design

We designed this product with seamless panels under the arms to limit irritation due to the repetitive paddling movements associated with surf sports.

Product testing

Developed and tested by our design teams in Hendaye, France. The components used for this product are laboratory-tested to ensure the best possible quality and durability.

Storage instructions

In a dry, ventilated place. Avoid heat sources. To extend the life of your wetsuit, do not leave it out to dry in direct sunlight. Machine washing is not recommended.



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

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Size Guide Visual