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Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt

Sale price: $69.99 Regular price:

Long-sleeved base layer made from 100% warm and breathable Merino wool. Take it on all your mountain trips!

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Sale price: $69.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8670229

Product Features

Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt | Our team of backpacking enthusiasts developed this merino T-shirt for backpacking without having to worry about the odors of perspiration.

Long-sleeved base layer made from 100% warm and breathable Merino wool. Take it on all your mountain trips!

A photo of the Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt in use
A photo of the Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt in use

Odor control

The component limits perspiration odours. Laboratory test ISO 17299-3


100% Merino wool t-shirt (190 g/sqm) for additional warmth

Moisture wicking

The high absorption capacity of the wool removes the feeling of dampness

Freedom of movement

The natural stretch of wool offers unrestricted movement


Ultra-fine (18.5 microns) Merino wool. It is soft and pleasant to wear


Just 210 g in size L. Fabric 190 g/m²

Questions & Answers

Product Customer Reviews

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590 Reviews
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Forclaz Men's MT500 Long-sleeve 100% Merino Wool T-shirt, black Image 10 of 9
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High CP value

Strong ability to suppress odor

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At its finest!

Any time!

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Comfortable and well cut. Nice…

Comfortable and well cut. Nice in black. Perfect for yoga in winter.

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I recommend

Great T-shirt at a good price

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Good product

Fits well and keeps what it promises

A workhorse - impossible to overwhelm

I use these shirts 6 months a year, 9 hours a day. I have 4 spare pieces, I wash them in the evening and put them on in the morning to dry them. Wash with Nikwax Tech Wash or Wool Wash - depending on what I have in my apartment. The oldest one is slightly pilled but still looks good. Above 22 degrees Celsius it is too hot in this T-shirt. I'm very happy. I recommend


"Day to day" wear without problems

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Perfect shirt for cycling holidays


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Perfect shirt for cycling holidays


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Too weak

Bought last year but didn't have the chance to test it, I finally put it on 2 days ago for the first time. Unfortunately this afternoon I noticed a hole in my chest when I looked in the mirror. I have no memory of a major tear, I probably just rubbed it with something, really nothing notable. I think that 100% wool is much too fragile, all my other decathlon t-shirts 70-90% wool / 10-30% other that I have had for years are perfect and do not have this problem

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Worth recommending!

Nice T-shirt, although it looks pathetic on the hanger in the store. Just wash it in wool liquid so that it becomes soft and fits nicely to the body without being too tight. Good thermal insulation, absorbs odors very well. I recommend

Not yet used on…

Not yet used on several consecutive days! very pleasant to wear!

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All good, just Merino.

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Good but…

Good product that I would like to repurchase…. But €5 increase (>10%) compared to last winter…
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Additional Product Information


Main fabric: 100.0% Wool

What are our commitments in favour of animal welfare?

We only use wool from merino sheep bred on farms in South Africa that do not practise mulesing. We decided to build a partnership with a group of breeders (Konsortium Merino) to guarantee respect for animal welfare.This means we have full traceability, which allows us to guarantee the origin of the wool. More information: visit our website

Odour control

The component limits perspiration odours. This Merino wool t-shirt can therefore be worn several days in a row and means you can take less clothes when trekking making for a lighter backpack!

Reduction of the freezing effect

When you make a physical effort and sweat heavily, the merino wool easily traps the insulating warm air and can absorb up to 35% of its weight in moisture without making you feel damp, which is appreciable in cool weather. In hot, dry weather, the evaporation of the water in the wool absorbs energy, which cools the body slightly at the same time. Conversely, a synthetic material lets the body temperature go back down again faster.

Tip before use

For a softer feel, wash your t-shirt before first use.

How to wash your t-shirt made with merino wool?

We recommend that you machine wash your MT500 MERINO wool T-shirt at 30°C on a normal cycle, preferably with liquid detergent. Dry flat and NEVER tumble dry unless you want it to shrink by one or two sizes!For more information:

Product testing

We've tested the material in a climate-controlled chamber in order to determine its performance level. The results highlighted the heat-regulation properties of wool. Indeed, after making a physical effort and sweating a lot, wool helps to maintain a consistent body temperature while synthetic fabrics cool down faster. The unpleasant cooling or freezing effect is therefore reduced by the merino wool.



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


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