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Forclaz Men's Mountain Backpacking Merino Wool Boxer Shorts MT500
Looking for a comfortable and durable base layer? Here's the solution with these boxers containing reinforced merino wool for superior durability.
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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
- Naturally flexible materials for comfort and freedom of movement
- Weight: 2.8 oz in Size L
Product Features

Softness
Ultra-fine (18.5 microns) Merino wool. It is soft and pleasant to wear
Moisture wicking
The high absorption capacity of the wool removes the feeling of dampness
Odor control
The component limits perspiration odours. Laboratory test ISO 17299-3
Abrasion resistant
Wool fibre surrounded by polyamide yarn for protection
Freedom of movement
We have added 4% elastane for more stretch and support
Breathability
Merino wool is breathable, stays warm in winter and wicks away moisture in summer
Weight
These boxers weigh only about 80g in size L. 190 g/sqm fabric
Questions & Answers
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Product Customer Reviews
Nothing to envy of the merino boxer shorts from the Canadian brand with a fossilized sole that I also have and which cost twice as much... more GR and no problem
It is very comfortable for daily wear and can be integrated into daily life. It is also safe to wear when traveling.
These shorts wear very well. They look great. They neutralize odors well even after a few days of use.
Merino can certainly be a fragile fabric, but in this case, these boxers are, and offer ultimate comfort. The characteristics of these materials make them truly the essential tool for going out for a sporting activity in the mountains.
I did a trek with 3 of these underpants for 8 days (I was a beginner, forgive me 😅 ) 2 or even just one would have been enough if you push it to the extreme.
Given to my partner, beautiful design and ideal for multi-day trekking
Decathlon's designs will not disappoint you. Decathlon's materials are worth the money. I love wearing Decathlon's clothes. They are comfortable and admirable.
Everything's fine
What a joy these boxers are! No odors even after 4 days of wearing them. Very comfortable. Very durable! I just wish Decathlon had a seamless model that would be even more comfortable.
The size is too small, so it is recommended to provide more purchasing suggestions so that consumers will not buy products that do not fit their size. After all, underwear cannot be returned or exchanged like jackets.
The product is of good quality, but expensive (it's worth hunting for a sale ;))
Comfortable, soft, warm. And when hiking, you can wear them for at least 3 days without worrying about bad odors. Hand washable and dries quickly even when hung on a backpack. I'm buying two and rotating them.
perfect for avoiding friction, very good product
Merino wool boxers are extremely comfortable and pleasant on the skin. The material is natural, breathable and maintains temperature, which makes them a perfect choice for all weather conditions. They dry quickly, and the quality of the workmanship is excellent. I recommend them to anyone looking for comfort and functionality in everyday clothing.
The boxers are well made and comfortable, but in the conditions I was in in the mountains, I didn't feel much difference from regular models. Despite this, they didn't disappoint me - they fit well, don't rub and dry quickly.
Size Guide

Additional Product Information
Composition
Main fabric: 86.0% Wool, 4.0% Elastane, 10.0% Polyamide
Sizing and fit
These boxers have a fitted cut for enhanced moisture transfer to the outside of the fabric.
How have we enhanced the durability of our boxers made with merino wool?
We have used a BETA-SPUN yarn structure in which the polyamide threads coat the Merino wool fibres and protect them from rubbing and breaking without affecting their properties.
Tip before use
To make the component feel softer, don't hesitate to wash your boxers before first use.
How to wash your merino wool boxers
We recommend that you machine wash your Trek 500 Merino boxers 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: https://support.decathlon.co.uk/how-to-maintain-a-merino-wool-garment
Product testing
These boxers have been tested and validated in the field in real-life conditions. They were worn for 5 weeks in spring 2019 by several people who went trekking in the Canary Islands for 2 weeks, followed by 3 weeks on the GR10 route in the Pyrenees.
Origin
Imported

Forclaz Men's Mountain Backpacking Merino Wool Boxer Shorts MT500
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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.
