What’s the difference between water-repellent and waterproof trousers?

Water-repellent trousers shed water droplets and withstand a moderate shower, but not heavy rain. Waterproof trousers like these have a membrane and seams that keep water out in sustained rain.

They have a breathability rating of 80,000 g/m²/24h. Like all waterproof overtrousers, they can retain some moisture during intense activity in the rain.

What should you wear underneath?

A thermal base layer or technical leggings make them more comfortable, especially in cold weather. The overtrousers protect against rain and wind but provide no warmth.

How should I care for them?

Machine wash at 30 °C with zips closed, using a detergent for technical clothing and a gentle spin cycle. Do not use fabric softener. To restore water repellency, apply a reproofing spray after washing.

Is it available in larger sizes?

Yes, they’re available in sizes S to 2XL.

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 waterproof trail overtrousers - Storm Pro

129,90 €

34 reviews

Waterproof

Breathable

Ultra-light

300 g (size M)

Black

Delivered from Tue 27 Oct.

Free returns within 30 days

Free repairs for life

By La Réparerie, our repair service.

Complete your outfit

STORM PRO

Ultrashell® 3-layer waterproof-breathable trail jacket - Men's

189,90 €

BLIZZARD

Stretch thermal jacket, breathable - Trail & Running - Men

84,90 €

STORM PRO PANT

129,90 €

34 reviews

Delivered from Tue 27 Oct.

Free returns within 30 days

Who did we design it for?

Part of the Pro range, designed for reliability, durability and comfort: overtrousers for trail runners on long outings in wind and rain.

Is it really waterproof?

Yes: our 3-layer ULTRASHELL® membrane provides protection against rain, with a 20 000 Schmerber waterproof rating and heat-sealed seams.

How do I put them on and pack them away?

The zipped lower legs let you pull them on without taking off your shoes. They pack away into their zipped rear pocket.

Can you wear them on their own, like trousers?

Yes, you can wear them on their own as an outer layer in rainy, windy or changeable weather. A thermal base layer underneath makes them more comfortable, especially in the cold.

Its performance

Breathability

80'000 g/m²/24h

Durability

Lightweight fabric

Lightweight

300 g (M)

Warmth

All seasons

Waterproofing

20'000 mm (Schmerber)

Ideal for

Trail running

Hiking

Keep moving when the weather turns.

In the mountains, conditions turn without warning. A sudden squall mid-traverse, gale-force gusts along a ridgeline. Without instant protection, the cold sets in and motion grinds to a halt.

These overtrousers are designed to keep you moving when the weather turns. They block wind and rain while letting your body breathe during hard efforts. The cut moves with every stride, even when worn over your full kit.

Because in the mountains, being able to keep moving whatever the weather makes all the difference. Giving up should never be the only option. Their performance meets the demands of all trail and ultra-trail races.

Key features

Zipped leg bottoms

- Quick to put on without removing your shoes.

Elasticated waistband

- Stable hold over equipment with no pressure points.

Sealed seams

- Heat-taped seams for a fully waterproof finish.

Compactable

- The trousers pack into their zip pocket.

ULTRASHELL® Technology

Waterproof and breathable protection to tackle demanding mountain conditions.

High waterproofing: high-performance membrane combined with constructions adapted to wet and windy environments.
Optimised breathability: microporous membrane promoting moisture evacuation during exertion.
Windproof protection: limits heat loss and improves comfort in exposed conditions.

Designed for intensive use in the mountains, ULTRASHELL® technology favours built-to-last constructions to ensure a high durability and reliable long-term protection.

Details

Specifications

Weight

300g (M)

Brand

Cimalp

Breathability

Ultra-breathable 80'000g/m²/24h

Wind resistance

Strong wind, 60 to 90 km/h

Waterproofing

20,000mm water column (20,000 Schmerber)

Insulation

ALL SEASONS

Size type

Men's Bottoms

Traceability

Product sheet relating to environmental qualities and characteristics
Manufacturing: China
Weaving/Knitting: China
Dyeing/Printing: China
Releases plastic microfibres into the environment when washed

Reviews

4.7

Based on 34 reviews

5

85%

4

8%

3

0%

2

5%

1

0%

Customers recommend the usual size

Water resistance

Breathability

In summary This content is written by AI

Customers appreciate its protection in rainy, windy and cool weather: worn on the TDS, the Camino del Norte or while cycling, it kept them dry and warm, including one user over 1,000 km. Several also praise its light weight, neat finish, quick pull-on design and practical zips that fit over shoes. It can, however, come up large: check the size guide carefully, especially if you plan to wear it over trousers.

PIERRE.P

Verified customer

Ordered size M Ordered color Noir

Translated review

12/09/2025

Excellent product, lightweight, with very nice finishing. No problem rolling the pants up into the back pocket despite what I've read. I'm taking them on the Diagonale des Fous! The sizing advice is good. I'm 1.75m tall and weigh 66kg, so I wear a size M.

Stéphane.L

Verified customer

Ordered size L Ordered color Noir

Translated review

15/10/2025

I'm 180 cm tall and weigh 77 kg. I initially ordered size L. It was far too big and wide for running, but perfect over my clothes for my quad bike rides. I then reordered the same pants in size M. This time, the size was perfect. They're great for training in rainy, windy, and cool weather.

frederic M.

Verified customer

Height 179cm Usually wears M Ordered size M Ordered color Noir Usage Trail running

Translated review

15/09/2026

Great pants used during the 2026 TDS — I didn’t get cold and stayed dry all night.

Christophe F.

Verified customer

Usage Randonnée

Translated review

13/09/2026

Used on the Camino del Norte, on the Camino de Santiago, 1,000 km from Bordeaux, and it was impeccable. Easy to put on quickly.