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Forclaz Men's MT500 Merino Wool T-Shirt

Regular price: $49.99 Regular price:

The mesh inserts improve perspiration wicking to keep you dry, even when working hard. For added strength, the woolen threads are sheathed in a polyamide thread.

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This product runs small

Sale price: $49.99 Regular price:

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San Francisco, 735 Market St. Options

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About this item:

  • Durable and Breathable Merino Wool
  • Moisture wicking: Significant absorption capacity
  • Weight: 5.3 oz in Size L
Model: 8755226

Product Features

Forclaz Men's MT500 Merino Wool T-Shirt | Ideal for your long hikes, this T-shirt is made of merino wool that limits odors from perspiration (laboratory tested according to ISO 17299-3).

The mesh inserts improve perspiration wicking to keep you dry, even when working hard. For added strength, the woolen threads are sheathed in a polyamide thread.

A photo of the Forclaz Men's MT500 Merino Wool T-Shirt in use
A photo of the Forclaz Men's MT500 Merino Wool T-Shirt in use

Odor control

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

Moisture wicking

The mesh panels and mesh fabric keep the body dry

Abrasion resistant

For greater resistance, the wool yarn is surrounded with polyamide thread.

Freedom of movement

The naturally-occurring stretch properties of wool don't restrict your movements


Breathable material that allows water to evaporate in hot and dry weather


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


The t-shirt weighs just 5.3 oz. in size L. 160 g/sqm fabric

Questions & Answers

Look for product information, frequently asked questions, opinions...


What size should I buy for a 40" chest? I see that it runs small but how small? Do we need to size up to an XL?


We recommend size XL. Please refer to our size guide for more details.

By Uluç on Feb 22, 2024 | STAFF

Product Customer Reviews

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Good product, very satisfied,…

Good product, very satisfied, and in addition European manufacturing in Portugal. This prompted my purchase

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Huge disappointment

A quality t-shirt on paper but so thin that it gets holes very easily. I haven't worn it much since July (date of purchase) and it already has holes in it. I had already exchanged the previous model for the same reason. Frankly disappointing given the price!

Excellent shirt for trekking, limits bad odors and dries very quickly

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Great T Shirt!!!

Very light and pleasant to wear!!! I sweated quite a bit in it but that was personal 😅 nevertheless it dries quickly!!! Price a bit expensive to start but that’s personal too 😋

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I purchased the men's S for myself (1.76x 73 kg woman). I am very satisfied on all fronts. Unfortunately I had to choose the men's model because the women's one has a round neckline that is too wide, the shoulder straps of the backpack press against the skin of the neck and it is impossible to use it for a long time, especially on hot days when you sweat a lot. I can't believe this lightness on the part of the Decathlon brand which always gets them all right. The female neckline needs to be changed.

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t-shirt used as a woman

very good for the off-season, regulates the temperature well and avoids odors

Excellent t-shirt, very comfortable for long treks, the body does not get cold and does not give off bad smells. Excellent quality for the price

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excellent shirt that revolutionizes the use of t-shirts throughout the year, this shirt is very useful, once you try it you won't be able to do without it. strong points fast drying no bad smells. weak points slightly high price.

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I would have preferred brighter colors

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Best value for money as usual

After 2 years of use including 6 months of bikepacking traveling wearing it every day it finally gave up the ghost 😪 Ideal from 15°C to 25°C for me. It breathes really well and I can wear it for 1 week straight before washing it. The merino mesh in the back ended up making holes. I continue to wear it as an underlayer, it breathes better.

Finish to be reviewed.

I bought the t-shirt in January 2024. A sewing defect appeared quite quickly on one of the sleeves and as a result a small hole was created on the shoulder seam. Disappointing !

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Great merino wool top. Good as a base layer. Breathable yet lightly insulating. As with all merino wool, it's not the most smooth material, but this top is relatively comfortable. Love the bright colour.

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Fits great and is comfortable and practical, nice look

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Size Guide

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Additional Product Information


Main fabric: 89.0% Wool, 11.0% Polyamide ; Yoke: 66.0% Wool, 24.0% Polyamide, 10.0% Elastane

How does the mt500 merino t-shirt limit odours?

The components used reduce bad odours. Laboratory tested to standard ISO 17299-3. Main fabric: 89% Merino woolMesh panels and a mesh fabric under the arms and in the middle of the back: 66% Merino wool, 24% Polyamide, 10% Elastane.

How does the mt500 merino wool t-shirt help perspiration evaporate?

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.

What is the fit of the mt500 merino wool t-shirt?

This T-shirt has a slightly fitted sports cut to help wick away moisture to the outside of the fabric. Select your usual size, or one size larger if you prefer to wear your T-shirts looser.

Where does the merino wool used for the mt500 merino wool t-shirt come from?

We 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 traceability, meaning we can guarantee the origin of the wool.

A tip before using the mt500 trekking t-shirt?

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

How do i wash my mt500 merino wool trekking t-shirt?

We recommend you machine wash your Merino wool T-shirt at 86°F on a normal cycle with Merino wool liquid detergent sold under code 8817234. Dry flat and NEVER tumble dry unless you want it to shrink by one or two sizes! You can find an article on looking after merino wool clothing on the Forclaz website.




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