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Men's Mountain Backpacking Merino Wool Boxer Shorts MT500

Sale price: $34.99 Regular price:

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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Sale price: $34.99 Regular price:

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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
Model: 8542384

Product Features

Men's Mountain Backpacking Merino Wool Boxer Shorts MT500 | Our team of mountain trekking enthusiasts developed these boxers, which contain merino wool, for trekking comfortably over long periods.

Looking for a comfortable and durable base layer? Here's the solution with these boxers containing reinforced merino wool for superior durability.

A photo of the Men's Mountain Backpacking Merino Wool Boxer Shorts MT500 in use
A photo of the Men's Mountain Backpacking Merino Wool Boxer Shorts MT500 in use


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


Merino wool is breathable, stays warm in winter and wicks away moisture in summer


These boxers weigh only about 80g in size L. 190 g/sqm fabric

Questions & Answers

Product Customer Reviews

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perfect for practice…

perfect for the practice of forced marching I recommend once put on you no longer feel it

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comfortable, easy to wash

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Merino wool is…

Merino wool is a must-have. On the other hand, the seams of the boxers do not hold up. After 5 uses the seams start to loosen.

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A good pair of underwear, a little expensive

To see the solidity over time. A little expensive

Completely content.

Comfortable to wear, good fit. Everything fits.

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easy to wear

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No more overheating with these underwear

Very surprised at the quality/price ratio, perfect

Very surprised by the quality of these boxers. Top quality/price ratio. I compared it with one of my other Merino boxers from another well-known brand (Ice...) which costs 3 times more expensive, and I prefer the one from Decathlon because the seams are surprisingly superior and it is longer on the legs. Other people complain about the elastic waistband that bends, but I personally don't have that problem. The size guide was not correct for me. By entering my measurements and specifying my age, weight, etc. the site recommended a size M. However, the size table indicated that my size was L. Fortunately I did not follow the guide and instead followed the size table, because the M would have been much too small . I have a waist circumference of 80cm and a pelvis circumference of 102cm, size L is perfect for me.


They are not even me. I took them for mountain sports: some skating, some skiing, tobogganing. They behaved exemplary. They molded perfectly and warmed the whole area while letting the skin breathe!

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Very comfortable to wear, fourth purchase

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thin, little heat

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Comfortable to wear

Nice boxers for reasonable money.

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Great, but won't last long

Probably my favorite underwear. It doesn't stink, you feel great BUT. I have about six already, but they always break through. No matter how hard I try to save them, they never last more than half a season. Too bad, too bad.

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Good to wear and reasonably priced

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Comfortable and functional underwear

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Size Guide

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Additional Product Information


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:

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.



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
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


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