Is this trouser warm enough to wear on its own?

This model is designed to provide good thermal insulation during your winter outings. However, in very cold conditions or for more static activities, we recommend adding a base layer underneath to ensure optimal comfort.

Does this trouser protect against rain?

This trouser is water-repellent and windproof: it sheds water and snow from its surface. It will protect you during moderate showers. However, it is not a replacement for fully waterproof overtrousers in heavy, sustained rain.

What are the delivery times for this product?

If you place your order before 1 pm (excluding weekends), it will be dispatched the same day. Allow 2 to 4 working days for home delivery or collection point delivery within mainland France.

Can I return the item if the size doesn't fit?

Yes, absolutely. You have 30 days to return it and get a refund or an exchange. Return shipping is free. The item must be new, unworn, unwashed, and have its original tag.

Men's stretch mountain trousers with reinforcements

129,90 €

51 reviews

Anthracite

Delivered from Tue 3 Nov.

Free returns within 30 days

Available in several versions

Trousers Short length

Free repairs for life

By La Réparerie, our repair service.

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LAOS SHORT

129,90 €

51 reviews

Delivered from Tue 3 Nov.

Free returns within 30 days

Who did we design it for?

For hikers and mountaineers who tackle elevation gain on technical trails, scree fields and glaciers.

Trousers designed for those who alternate between multi-day trek in self-sufficiency and mountaineering on mixed terrain, without changing equipment.

This type of user needs trousers that follow every movement on steep ascents, withstand repeated contact with rock and stays comfortable from dawn to bivvy.

Suited to people under 5'8" (172 cm).

How do you wear it?

Thanks to its half-elastic waistband and adjustable leg openings, it pairs perfectly with hiking or approach shoes.

What makes the difference?

Its CIMAFLEX® technology combined with Cordura® reinforcements on critical zones delivers total freedom of movement without fear of premature wear. Its durable water-repellent finish effectively protects against external moisture.

Its performance

Lightweight

460g (M)

Warmth

Waterproofing

Water-repellent DWR

Wind protection

Moderate wind, 40 to 60 km/h

Ideal for

Mountaineering

Hiking

Snowshoes

Moving without constraint on every terrain

In the mountains, trousers take a beating. Steep ascents, technical descents, repeated friction against rock. Rigid kit ends up limiting range of motion, wearing down your footing and failing at critical zones.

These trousers have been designed to follow every movement, not restrict it. Their stretch construction adapts to every foothold on ascents and traverses alike. Strategic reinforcements absorb repeated contact without weighing down your progress. They stay supple under effort, durable over time.

Because in the mountains, moving freely changes everything. And durability must last as long as the commitment.

Key features

Reinforced trousers

Cordura panels: pre-shaped knees, seat and bottom of trousers

Water-repellent fabric

DWR treatment: durable water-repellent fabric guaranteed for 30 washes (Teflon EcoElite™ treatment).

Multiple storage pockets

2 zipped side pockets + 1 zipped rear pocket + 2 flap pockets on the thighs

Outstanding freedom of movement

Its stretch fabric gives you outstanding freedom of movement during your activities.

CIMAFLEX Technology

Freedom of movement and light protection for outdoor activities.

Comfortable stretch: stretch fabric that follows natural movements without restriction.
Water-repellent protection: limits the penetration of light moisture and splashes.
Easy to wear: comfortable material that promotes ease of movement during outdoor activities.

CIMAFLEX technology prioritises durable materials to ensure long-lasting performance and shape retention over time.

Details

Specifications

Weight

460g (M)

Brand

Cimalp

Wind resistance

Moderate wind, 40 to 60 km/h

Waterproofing

DWR water-repellent treatment

Size type

Men's short bottoms

Traceability

Manufacturing: China
Main fabric: 92% Nylon, 8% Elastane
Weaving/Knitting: China
Dyeing/Printing: China
MATERIAL CHARACTERISTICS: Releases plastic microfibres into the environment during washing

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Reviews

4.8

Based on 51 reviews

5

92%

4

3%

3

1%

2

0%

1

1%

Customers recommend the usual size

In summary This content is written by AI

Customers especially appreciate its comfort and fit, with fabric that is stretchy enough to allow wide movements while hiking. Many welcome the choice of two leg lengths, which is particularly practical for shorter people, and often find the waist and length just right. The five pockets, reinforcements and neat finishing make it practical on the trail. Its quality is regularly praised, with one customer buying it for the third time. It suits hiking as well as everyday wear.

Ian.M

Verified customer

Ordered size L Ordered color Vert foncé

06/12/2025

Just perfect right length and waist fit very comfortable Green colour a bit more green than olive by a very good product and excellent service

denis.g

Verified customer

Ordered size XL Ordered color Anthracite

Translated review

27/11/2023

Hello, this is the first time I haven't had to have a pair of trousers shortened; they fit me perfectly. However, I'm glad I had the chance to try them on in the store because I need an XL in the Laos 6, whereas the five pairs of Laos 5 trousers I've worn to a thread fit me well in size L, but they aren't available in shorter legs. The material used for the pockets of the Laos 6 seems more durable than on the Laos 5, which invariably end up with holes, as do the fly zippers. It's a shame because the rest of the trousers are very sturdy. I use them primarily for my work as a forester, where they get a lot of wear and tear. Sincerely, Denis

Yves.P

Verified customer

Ordered size M Ordered color Vert foncé

Translated review

02/09/2025

I'm very happy with these pants. They fit perfectly and the material is comfortable and stretchy enough not to restrict even the widest movements you might make while hiking.

laurent.h

Verified customer

Ordered size M Ordered color Vert foncé

Translated review

24/10/2025

Superb quality, the pants fit me perfectly! I'm 1.72 m tall and weigh 76 kg, and I'm going to test them this weekend, even in bad weather! The pockets and reinforcements are great, they feel wonderful! Just one thing, but it's due to my disability: the snap closure is easier for me than the safety button on the side (I have an amputation of my right hand), but perhaps other users will notice! Without a doubt, these are truly superb hiking pants and I can't wait to use them! Thank you for the quick processing of my order and for the delivery! Best of luck. Sincerely, Laurent

Pascal ..

Verified customer

Ordered size M Ordered color Anthracite

Translated review

13/10/2025

Very nice and comfortable hiking pants. The size is correct in both waist and length.