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Forclaz Men's MT900 Merino Wool Long-sleeve Shirt
With high weight (240 g/sqm), a stand-up collar and thumb loops, this t-shirt will keep you warm in the depths of winter.
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San Francisco, 735 Market St. Options
Select an available color and size to see options.
About this item:
- Warmth: This thick T-shirt (8.5 oz/m²) with Merino wool is comfortable up to 50°F
- Weight: 5.1 oz in size M.
- Odor control: Merino wool naturally prevents unpleasant odors
Product Features

Warmth
This thick t-shirt (240 g/sqm) made from wool is comfortable down to 10°C
Breathability
Inner side knitted in channels and easy ventilation with zip
Odor control
The component limits perspiration odours. Laboratory test ISO 17299-3
Abrasion resistant
Use of a wool yarn protected by a surrounding polyamide yarn
Softness
Ultra-fine wool (18.5 microns). It is soft and pleasant to wear
Weight
The t-shirt weighs just 350 g in size L. 240 g/sqm and 260 g/sqm fabrics
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Product Customer Reviews
Very soft. Very well cut. Runs rather small and is tight-fitting.
Very warm sweatshirt, comparable to Brubeck. The pocket on the body is very useful. If we have a very high marching speed, then it is better to dress in thin merino plus a light jacket. Low temperatures, about minus 10, marching speed 3.5-5 km/h - then as an additional layer it will be perfect.
A great merino wool T-shirt that is wonderfully warm, breathable and very comfortable.
Wore this for climbing in the Lake District in late December. Price point is perfect, and layered properly it’s perfect at keeping you warm and dry.
Good quality, good heat regulation
Highly recommended! Excellent heat supply, super breathable, no bad smells
Valid in almost everything except that after ONLY ONE USE of a few hours with a backpack it has already made a bad pilling on the back. Given the not indifferent cost I hoped for a greater duration. A note on the design: thanks to the stretch mesh the sleeves are exaggeratedly long.
A sweatshirt for the demanding. A product worth recommending.
Use in 2nd layer.
My boyfriend loves this shirt. He uses it as a lighter sweatshirt for a trip to the mountains or skiing. It keeps you warm, doesn't make you sweat, and is very comfortable even without a shirt underneath.
The undershirt was exposed to the elements during a 5-day stay at the Arctic Circle. Cozy fleece on the inside, smooth on the outside. The material makes it a little difficult to put on fleece. You have to hold the ends of the sleeves when putting on sweaters or similar. But it is very comfortable, keeps you warm and is soft. No odor even during strenuous activities such as husky sledding.
A 10/10 purchase. It's not the cheapest item of clothing, but it's well worth it. The merino wool does its job and I've worn the shirt for several days in a row on the bike without having to wash it because of the lack of smell, especially in the armpits. The fabric is very soft against the skin and very warm. It has an inner lining that makes it very warm. I was also able to try it out on a trail ride in the mountains at 5° and it was the perfect companion.
Comfortable and warm.
Solid design, beautiful color and very comfortable to wear
Very satisfied with this t-shirt for winter outings. Dries quickly. Keeps warm. Tested at -15°C.
Size Guide

Additional Product Information
Composition
Main fabric: 89.0% Wool, 11.0% Polyamide ; Yoke: 9.0% Polyamide, 63.0% Wool, 4.0% Elastane, 24.0% Acrylic
What are the fabrics used on this hybrid t-shirt?
This t-shirt has a hybrid design to enable the optimal balance between warmth and breathability.We use 2 fabrics:- the main fabric made from 89% wool and 11% polyamide (for durability). 240 g/sqm- the fabric used as inserts, particularly at the back and inside of the forearms is made from 63% wool, 24% acrylic (facilitates drying), 9% polyamide (for durability) and 4% elastane. 260 gr/sqm
What steps are recommended before wearing a merino wool t-shirt for the first time?
For a softer feel, wash your t-shirt before first use.
How to wash your t-shirt made with wool
We recommend that you machine wash your MT900 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!https://support.decathlon.co.uk/how-to-maintain-a-wool-garment.
Origin
Imported

Forclaz Men's MT900 Merino Wool Long-sleeve Shirt
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
