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Olaian 900, Short Sleeved Thermal Fleece Surfing T-Shirt, Men's

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Model: 8529012

Product Features

A photo of the Olaian 900, Short Sleeved Thermal Fleece Surfing T-Shirt, Men's in use

Olaian 900, Short Sleeved Thermal Fleece Surfing T-Shirt, Men's is designed for

This men's short-sleeved thermal-comfort top can be worn alone or under a fleece-lined Neoprene wetsuit for extra warmth

Irritation reduction

Tight-fitting cut and seamless panels under the arms. 3-hour sessions.


Drawstring and loop at the bottom of the top to help keep it firmly in place.

Sun protection

UPF 50+ fabric. Sun protection even when wet. Blocks at least 95% of UV rays.

Sun protection

UPF 50+ fabric. Sun protection even when wet. Blocks at least 95% of UV rays.

Product Customer Reviews

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Olaian 900, Short Sleeved Thermal Fleece Surfing T-Shirt, Men's,black
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Great product

Online sizing tool was really helpful and accurate. Keeps core heat in open water swimming.

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Sleeve Thermal fleece UV Protection

My son loves it! Very comfortable. I went back and brought 3 more for him.

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My husband wanted this for Center Parcs and loved it.

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Im a swimming teacher, so at times I can be in the water teaching for up to 3 hours and this thermal works wonders. Keeps you so nice and warm. Defo reccomend

brilliant , for my work

I run a swim school, i will definatelt be advising my team to purchase this as they are in the water so much, Also will send a link to all our clients , perhaps we could get a discount code ,? its Swim islington, based at Highbury grove school, We have a client base of over 300 .

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Says what it is

A good top for mid season

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Producto que ha cumplido con las expectativas

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Muy bien producto

Producto buenísimo. Se adapta a la perfección y es genial y bonito.

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Excelente Camiseta

Excelente camiseta para el baño en el mar

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Me encanta genial

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Buena calidad del producto

He realizado snorkel con esta camiseta y estado en la playa con ella y no da calor como esperaba por su grosor protege del sol y no transmite el frió de las aguas.

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Ajustable. Secado rápido. Libertad de movimientos

Ligera. Facilidad de talla

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Perfecta cumple su funcuon

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Buena lifa

La pelusilla que tiene por dentro hace que mantenga muy bien el calor del cuerpo incluso en actividades acuáticas de varias horas.

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Esta muy bien, yo no la utilizo para surf sino para piragüismo un deporte totalmente olvidado en decathlon, pese que en Asturias es un deporte muy practicado y en alza. El resto de las térmicas tampoco están concebidas para el cantábrico, pues temperaturas a 22ªC nunca las tenemos ni es nuestro mar ni nuestros ríos. Esta termica al tener su parte interna afelpada ayuda

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Additional Product Information


Main fabric

  • 91% Polyester cationic
  • 9% Spandex

How to choose your uv protection t-shirt (part 1)

All of our UV-resistant T-shirts are UPF 50+, i.e. they have the maximum level of sun protection. The choice between them will therefore be made based on the length of the sleeves and will depend on what it will be used for. The constraints are greatest for surfing, so we decided to build our range primarily for surfing. For surfing, the choice will be made according to the duration of your sessions: 1 hour, 2 hours or 3 hours.

How to choose your uv protection t-shirt (part 2: according to the duration of the session)

1 hour: Occasional practice. You can choose between a loose fit (priority to ease of dressing and comfort when dry) or a fitted cut (priority to comfort when wet). A loop system to connect it to the shorts ensures the stability of the product. 2 hours: Regular practice. Comfort when wet is enhanced by the seamless panels under the arms and the drawstring, which further increases stability. 3 hours: Intensive practice. Additional warmth to help you stay in the water for longer.

Warmth and wind

The minimum water temperature recommended for the use of this UV-protection T-shirt is 72°F if it is worn on its own. Max. duration: 3 hours. This top is made of fleece, which helps avoid shivering when you enter the water. Please note that the presence of wind will have an impact and can cause discomfort when wet, making you feel colder. In windy conditions it is therefore recommended to choose a top with neoprene. This top can be worn under a wetsuit

Uv protection even when wet

The fabric of this OLAIAN UV-resistant product blocks at least 98% of UVB radiation and 95% of UVA (UPF 50+). This guarantees effective protection from the sun. It can be used both in and out of the water, for water or nautical sports. UV radiation is filtered by the density of the textile fibers, for long-lasting protection, even after washing. Caution: deteriorates in chlorine.

What does upf 50+ mean?

UPF is a sun protection factor (Ultra Violet Protection Factor) and is standardized worldwide. It defines the protection level of a fabric and more precisely the proportion of UV rays it lets through. To meet the standards, it must block at least 95% of UV rays. UPF 50+ means that the fabric blocks at least 95% of UVB and 98% of UVA rays.

Reduced chafing

This thermal top helps limit rubbing and chafing due to contact with the surfboard or bodyboard. It can also be used under a wetsuit to limit chafing, particularly around the neck and armpits. We have added seamless panels under the arms to limit irritation due to paddling movements. Our test protocols confirmed that irritation was indeed limited during 3-hour sessions.

Support system

The Tribord UV-resistant top has a drawstring at the hips. This lets you tighten the top so that it stays firmly in place. It has also been designed so that the drawstring of your boardshorts can be attached to it to stop the top from riding up while you surf.

Multi water sports uv protection t-shirt

Our UV tops are designed to meet the needs of the most demanding surfers. Our design choices also make them compatible with other water sports such as swimming, kitesurfing, windsurfing, wakeboarding, water skiing, sea wading or SUP (stand-up paddleboarding).

Behavior when in the sun

Although this T-shirt protects against the sun, phenomena such as reflections (from water, sand ...), heat, time of day, etc. must be taken into account. Wearing this T-shirt does not exempt the wearer from adopting suitable behavior: wear sunglasses, wear a hat or cap, regularly apply an appropriate sun block, drink regularly, etc.

Sun protection

What is the olaian brand?

OLAIAN, DECATHLON'S SURFING BRAND Based in Hendaye, in South West France, OLAIAN is Decathlon's surfing brand. In our offices at the water's edge, we can design a pair of boardshorts and then on the same day go surfing and test them to check that they stay in place in the waves, are comfortable and durable.



Product testing

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

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.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual