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Forclaz Men's MT500 Merino Wool Long-sleeve Shirt
A truly comfortable base layer, this T-shirt contains reinforced merino wool for greater durability. Its collar features a zip for better ventilation.
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San Francisco, 735 Market St. Options
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About this item:
- Weight: 8.6 oz (240 g) in size M. Fabric 6.7 oz/sqm
- Softness: Ultra-fine Merino wool (18.5 microns). It’s very soft and doesn't itch
- Odor control: The Merino wool (86%) naturally helps prevent unpleasant odors
- Breathability: Merino wool is breathable and helps maintain the right body temperature
- Moisture wicking: The high absorbency of wool helps keep the body dry
Product Videos
Product Features

Odor control
The component limits perspiration odours. Laboratory test ISO 17299-3
Warmth
Merino wool T-shirt (190 g/sqm) to provide additional warmth
Moisture wicking
The high absorption capacity of the wool removes the feeling of dampness
Abrasion resistant
Wool fibre surrounded by polyamide yarn for protection
Breathability
Breathable merino wool helps maintain an ideal body temperature
Freedom of movement
The natural stretch of wool offers unrestricted movement
Softness
Ultra-fine (18.5 microns) Merino wool. It is soft and pleasant to wear
Weight
The T-shirt weighs just 243 g in size L. 190 g/sqm fabric
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Product Customer Reviews

Very good product
Good value for money Discreet design
Good value for money. Food and a warm first layer t-shirt.
excellent
I've had my eye on this top for a long time and treated myself to it last week. What can I say, I'm very impressed, all the advertised features are exactly as described. A clear purchase recommendation and I would buy it again at any time.
I even wear it in summer to protect my arms and neck from the sun and it is bearable even in high heat. It's already the second one I bought
Average appearance
Fits well and keeps its promises: warmth, comfort and softness
Good value for money
Very soft and light with full warmness
Perfect for walking and in the evening after a (cold) shower, no bad odors and very warm. Also perfect as pajamas at high altitude.
Excellent
Easy to wear and comfortable
I have purchased this product a couple of times, always very practical in winter. It is warm and easy to wash/dry.
very good overall. RAS
Size Guide

Additional Product Information
Composition
Main fabric: 86.0% Wool, 14.0% Polyamide ; Yoke: 98.0% Wool, 2.0% Polyamide
How have we enhanced the durability of our t-shirts made with merino wool?
We use a BETA-SPUN yarn structure, i.e. the merino wool fibres are coated with a fine sheath of polyamide filaments to protect them from rubbing and cuts, without affecting the properties of the wool.
Odour control
The components used reduce bad odours. Laboratory tested to standard ISO 17299-3.
Reduction of the freezing effect
After exercise and sweating heavily, Merino wool prevents evaporation helping to maintain body temperature by absorbing the majority of the body's moisture. This therefore reduces any unpleasant chilling effect.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 ZIP T-shirt at 30° 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: https://support.decathlon.co.uk/how-to-maintain-a-merino-wool-garment
Product testing
In November 2018, 8 trekkers (4 men and 4 women) and part of the Forclaz design team tested this T-shirt for four days in the Southern French Alps (Lus La Croix Haute). You can expect wind, rain, a bit of snow, a bivouac... and a lot of fun! We were then able to make the final modifications and validate it for mountain trekking use.
Origin
Imported
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.
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Research and development
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Forclaz Men's MT500 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.
