Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Sale product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

Olaian 900, Long-Sleeved Thermal Fleece UV-Protection Surfing T-Shirt, Men's

Sale price: $24.99 Regular price:

Men's long-sleeved UV-resistant T-shirt for protection from the sun, even in water, as well as from irritation due to contact with the board. Fleece interior provides extra warmth.

Color: Select a color
Size: Select a size
Size Guide

This product runs small

Sale price: $24.99 Regular price:

Free returns

Free shipping over $35

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8529013

Product Features

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

Olaian 900, Long-Sleeved Thermal Fleece UV-Protection Surfing T-Shirt, Men's | Our team of designers developed a UV-protection T-shirt that provides warmth when surfing in warm water, for sessions lasting up to 3 hours

Men's long-sleeved UV-resistant T-shirt for protection from the sun, even in water, as well as from irritation due to contact with the board. Fleece interior provides extra warmth.

Irritation reduction

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

Thermal insulation

Fleece lining. Better insulation from cold except when wet in windy conditions.


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

Sun protection

UPF 50+ fabric. Long-sleeved. Blocks at least 95% of UV rays, even when wet.

Quick dry

The water-repellent treatment limits water absorption and speeds up drying.

Product Lifestyle Image Gallery

Image Gallery

Olaian 900, Long-Sleeved Thermal Fleece UV-Protection Surfing T-Shirt, Men's,black

Product Customer Reviews

Skip to reviews
410 Reviews
Write a Review 

Olaian 900, Long-Sleeved Thermal Fleece UV-Protection Surfing T-Shirt, Men's,black
Filtered by reviews Loading reviews…
Warm and comfy

Use it for kayak fishing. Keeps me warm during chilly mornings.

icon-circle-checkmark verified purchase
What I have been looking for

Every warm and for the price, you can't go wrong.

icon-circle-checkmark verified purchase
knee ligament support

Working well . My Dr approves.

icon-circle-checkmark verified purchase
Men's surfing long-sleeve thermal fleece top T-shi

Using this top under a neoprene wetsuit during a winter racing series. Really well made and could not recommend highly enough

icon-circle-checkmark verified purchase
Excellent all round

Great price, great fit and despite the comments of others, Black is a great colour. It soaks up the heat from the sun when there is some and I can wear some lairy shorts without worrying about colours clashing.

Thermal Rash Vest

Bought this mainly on price, needn’t have worried. Used it for paddle boarding under a 2mm Decathlon wetsuit, nice and warm, fits well, only got the arms wet, but it was fine.

icon-circle-checkmark verified purchase

feel good

icon-circle-checkmark verified purchase
Rash vest for jaysjing

Great as it is the middle of winter! No rubbing, nice and warm, good fit using large for 38-40 inch chest, m, edium was too small Quick arrival for collection from local shop! Another great decathalon product!

icon-circle-checkmark verified purchase
Thermal rash top

Excellent for tough mudder

icon-circle-checkmark verified purchase
Pretty good.

It is as described. I wear L or XL clothing. I bought the XXL and it fits perfectly, i.e. tight as it should.

very warm and good value

used for swim now, it has good protection from the cold. very good value of money

icon-circle-checkmark verified purchase

Hello Rose,

Thank you for supporting our product. We appreciate your insight and feedback as you motivate us to strive for outstanding product quality and range. 

It's glad that you had a great swimming journey with this product, as we aim to make sports accessible for the many. 

Whoever you are, a beginner or an advanced athlete, we promise to take good care of your needs.

We are looking forward to seeing you again.

Thank you again for your support. 

Eric Cheung

Watersports B2B & Service - Decathlon Hong Kong


average quality

icon-circle-checkmark verified purchase
Bang for the buck

Thermal features really work! Under the sun it feels cold despite the heat.

icon-circle-checkmark verified purchase
Great product!

Product worked well, would recommend! Best to fit before buying as I use (fits well) a Large size whereas my regular clothes are Small to Medium sizes.

icon-circle-checkmark verified purchase


icon-circle-checkmark verified purchase
Skip to reviews

Size Guide

Size Guide Visual

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 insulates from the cold and 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. The density of the textile fibers filters out UV rays, for long-lasting protection, even after washing. Caution: deteriorates in chlorinated water.

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

This 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.

Quick drying

The polyester textile is naturally quick drying. An additional water-repellent treatment prevents water absorption to reduce the windchill effect. It also makes drying easier. The effects of this treatment will decrease after 5 or 6 machine washes. To increase the life of the treatment, rinse with clean water instead of washing with detergent.

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 provides protection from the sun, phenomena such as reflections (from the water, sand, etc.), 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.

Surfing sun protection

What is the olaian brand?

OLAIAN, DECATHLON'S SURFING BRAND Based in Hendaye, in South West France, OLAIAN is Decathlon's surfing and bodyboarding brand. In our offices at the water's edge, we can design a UV-protection T-shirt and then on the same day test it directly in real practice conditions



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