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Forclaz Trek 500, Short Sleeved Merino Wool Hiking T-Shirt, Men's
T-shirt in Merino wool reinforced for improved durability. Ideal for backpacking for several days: no odors, no washing!
Free shipping over $49
Final Sale: No returns or exchanges
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Videos
Product Features

Abrasion resistant
Use of a wool yarn protected by a surrounding polyamide yarn
Odor control
Merino wool (89%) naturally helps prevent unpleasant odors
Moisture wicking
The high absorbency of wool helps keep the body dry
Weight
The T-shirt weighs just 5.4 oz in size M. Fabric 5.5 oz/m2.
Freedom of movement
The natural stretch of wool offers unrestricted movement
Breathability
Breathable material to maintain an ideal body temperature even in the summer!
Softness
Ultra-fine (18.5 microns) Merino wool. It is very soft and non-itch
Questions & Answers
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Product Customer Reviews

This shirt keeps me very comfortable when doing outdoor activities in the winter. When doing strenuous activities (e.g. snowshoeing) at a few degrees below zero (Celsius) I am comfortable with only this shirt on my upper body. I'll get more of these for next winter.
Hi James,
Thanks for another great review! We are happy to hear that this shirt worked out really well for you! We appreciate all your feedback!
Kristen
Get value
Hello Andrew,
Thank you for leaving a review about this merino t-shirt.
We are really happy to read that you are satisfied with you purchase and we hope to see you again soon!
Decathlon Calgary Team
Enjoying so far. First merino wool shirt I’ve owned. Will see about durability. Price point seems almost too good to be true but alas the decathlon way.
Hi David! You said it: "it's the Decathlon way"! Our prices do not reflect quality (nor sustainability)- we are just able and willing to make prices (and in turn, sports) accessible to the many! You can read more about the "why" behind our affordability here: https://www.decathlon.com/blogs/inside-decathlon/how-do-we-make-our-prices-so-affordable. Thanks for visiting us and we hope you enjoy many comfortable hikes in your new shirt! 💙
Haley
light and warm. But it causes itchy on my skin if I wear it for a long day.
Eady wash and dry. Perfect for all sports.
Great value merino wool top.
What can I say but what a great price for a merino wool base layer.
I wore the short sleeved merino base layer on a 12 mile back packing walk on the Wold Way. It was a hot day and I was carrying my 33 litre back pack. The base layer wicked moisture away efficiently and I did not feel uncomfortable despite the weight I was carrying.
Possibly the best product Decathlon sell. Just as good as branded stuff twice as expensive. Love the anti odour properties
Merino for this price is excellent
I'm very disappointed with this T shirt as it's already got several runs in the material about 4 inches long. Hardly lasted any time & the material is too delicate for hiking use.
Great tech T-shirt, used for MTBing, walking and climbing. I’ll be getting another few
Lovely sweat-wicking material, nice colours.
Well fitted top, soft and comfortable and dries really fast after washing.
Bought this for a trek in the Atlas Mountains knowing that there would be at least three days without showering. Comfortable, reasonably quick-drying and it really didn't pong at the end of it all. The only negative was the slightly itchy stitching for the cable on the sleeve. A quick un-pick with my penknife and problem solved. Really impressed, especially at the price.
Size Guide

Additional Product Information
Composition
Main fabric
- 89% Wool
- 11% Polyamide
Yoke
- 89% Wool
- 11% Polyamide
Sizing and fit
This T-shirt has a slightly fitted sporty cut that facilitates moisture transfer toward the outside of the fabric. Select your usual size or 1 size larger if you prefer a looser fit.
Durability
Use of a BETA-SPUN yarn structure in which the polyamide threads coat the Merino wool fibers and protect them from rubbing and cuts without affecting their properties.
Origin of the merino wool
We only use wool from Merino sheep raised on farms in South Africa that do not practice mulesing. We decided to build a partnership with a group of breeders (Konsortium Merino) to guarantee respect for animal welfare and the environment. We thus have complete traceability, which allows us to guarantee the origin of the wool. More information: https://www.forclaz.fr/merinos-2019-bp_4128
Odor control
Wool from Merino sheep naturally controls the spread of bacteria that cause bad odors. This Merino wool T-shirt can therefore be worn several days in a row and means you can take less clothes when backpacking making for a lighter backpack!
Reduction of the chilling effect
After exercise and heavy sweating, 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 quicker.
Tip before use
For a softer feel, wash your T-shirt before first use.
How do i wash my merino wool t-shirt?
We recommend that you machine wash your Merino wool T-shirt at 86°F on a normal cycle, preferably with liquid detergent. Dry flat and NEVER tumble dry unless you want it to shrink by 1 or 2 sizes! For more information: https://www.forclaz.fr/conseils/comment-laver-mon-tee-shirt-de-trek-en-laine-merinos-tp_1550
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.
Decathlon makes the difference
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Research and development
delivers high-quality cost-effective products
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State-of-the-art production processes
minimize manufacturing costs
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Optimized supply chain
reduces retail prices
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Minimal retail footprint
lowers overhead and indirect costs

Forclaz Trek 500, Short Sleeved Merino Wool Hiking T-Shirt, Men's
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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.
