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.

Fast 3 H - Men's ultra-lightweight stretch outdoor trousers

94,90 €

184 reviews

Ultra-light

Water-repellent

Edge/crampon protector

310 g (size M)

Black

Delivered from Tue 20 Oct.

Free returns within 30 days

Available in several versions

Men Women

Free repairs for life

By La Réparerie, our repair service.

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FAST 3 H EVO

94,90 €

184 reviews

Delivered from Tue 20 Oct.

Free returns within 30 days

Who did we design it for?

For trail runners, climbers and hikers who move between disciplines without changing kit.

Trousers designed for outings where the terrain changes fast: technical trail, rocky sections, rapid descents.

This athlete demands trousers that follow every movement without restriction, stay unnoticeable over long distances and withstand repeated abrasion from the alpine terrain.

How should you wear it?

Worn as a base layer directly against the skin. Straight cut, close to the body.

What makes the difference?

Its featherlight weight of under 300 g means you forget you're wearing trousers, even after hours of effort. Reinforcements Kevlar® at the lower legs for enhanced durability.

Its performance

Lightweight

310 g (M)

Warmth

Waterproofing

Water-repellent DWR

Wind protection

Moderate wind, 40 to 60 km/h

Ideal for

Hiking

Nordic walking

Trail running

Move freely, on every path

Steep climbs, surges on singletrack, quick transitions between disciplines. Every stride tests the fabric, every bend tests the cut. Trousers that pull or cling break your rhythm.

These trousers were designed to disappear during effort. Their stretch construction follows every movement without ever restricting the knee. They support your progress on technical terrain and rolling paths alike, with the same fluidity.

Because in the mountains as in trail, the best gear is the gear you forget you're wearing. And performance starts with total freedom of movement.

Key features

Silicone grip strips at ankle

- Perfect hold over shoes without riding up.

Back zip pocket

– Quick access to your phone or small items.

Adjustable elasticated belt

- Precise fit with no pressure at the waist.

Lower leg reinforcements

Protects the fabric against abrasion from rocks and vegetation.

Articulated pre-shaped knees

- Follows flexion on steep ascents,
- Maintains range of motion on downclimbing sections.

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

310g (M)

Brand

Cimalp

Wind resistance

Moderate wind, 40 to 60 km/h

Waterproofing

DWR water-repellent treatment

Size type

Men's Bottoms

Traceability

Product sheet on environmental qualities and characteristics
Manufacturing: China
Weaving/Knitting: China
Dyeing/Printing: China
Releases plastic microfibres into the environment during washing

Reviews

4.9

Based on 184 reviews

5

93%

4

3%

3

1%

2

0%

1

1%

Customers recommend the usual size

Comfort

Breathability

In summary This content is written by AI

Customers appreciate its very light weight and comfort, even in warm weather: the stretch fabric moves with you on steep climbs and stays breathable without feeling hot, while providing a windproof effect. Several have worn it for hiking, including one customer on the 1,000 km Camino del Norte, as well as for paragliding, bikepacking and gravel riding. The finish and practical zips are also praised. Be aware, however, that the cut is very close-fitting and sizing can be inconsistent: check your measurements carefully; the pockets are a little small for a large smartphone.

Ernest.C

Verified customer

Ordered size M Ordered color Kaki

17/09/2024

Having purchased other products in the past didn't hesitate when looking to acquire trousers for Nordic Walking/light weight hiking and these fit the bill perfectly. 1m 80cm tall and the M sizing was also fine. Usual no problems with ordering or delivery. Sure to be back again in the future as tried and tested.

Claude.P

Verified customer

Ordered size M Ordered color Noir

Translated review

11/08/2024

Perfect for evenings during summer camping trips. Water-repellent and works well in light rain. Very lightweight and impeccably finished. Size M fits perfectly, but I shouldn't gain a kilo around the waist :) Highly recommended for ultralight hiking.

THIERRY.D

Verified customer

Ordered size XL Ordered color Bleu

Translated review

19/12/2025

Perfect for my autumn/winter gravel rides, very lightweight and stretchy. I recommend it... Cimalp is excellent for advice and delivery.

Olivier.M

Verified customer

Ordered size L Ordered color Bleu

Translated review

01/10/2025

I bought a size L (44) for my height of 1.88m and weight of 78kg. I hesitated for a long time between this and a size M (42). I usually wear a size L/42. The L is perfect. The trousers are super comfortable, and I love the idea of the double-breasted Napoleon-style pockets, a feature borrowed from jackets. So practical when you're loaded down with all your gear.

Bertrand.G

Verified customer

Ordered size L Ordered color Gris

Translated review

27/03/2025

Size L, I'm 1.80m tall and weigh 70kg, perfect. Exactly as described. Comfortable and stretchy. Never disappointed with Cimalp since I started ordering from them!