What’s the difference between waterproof fabric and sealed seams?

Waterproof: the fabric keeps water out. Fully sealed: the seams do too. Here, the membrane has a 20,000 mm water column rating and the seams are sealed, so water gets through neither the fabric nor the stitching.

Does it meet ultra-trail mandatory kit requirements?

Yes. Its waterproof membrane and taped seams meet ultra-trail mandatory kit requirements. Check your race rules.

What should you wear underneath?

A breathable technical base layer. In cold weather or at night, add an insulating layer. The jacket protects against rain and wind; it does not provide warmth.

How should I care for them?

Machine wash at 30 °C with detergent for technical clothing. Use a gentle spin cycle and no fabric softener. To restore water repellency, use a waterproofing spray or tumble dry on low heat.

Is it available in larger sizes?

Yes, it comes in sizes XS to 3XL.

How many pockets does it have?

One zipped chest pocket, large enough for a phone. No lower pockets.

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 jacket - Storm Pro 4

189,90 €

692 reviews

Waterproof

Breathable

Ultra-resistant

285 g (size M)

Navy

Delivered from Wed 28 Oct.

Free returns within 30 days

Available in several versions

Men Women

Standard Pro Pro Plus

Free repairs for life

By La Réparerie, our repair service.

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AOSTE

Resistant trail shorts with integrated inner shorts and multi-pocket waistband - Men's

69,90 €

STORM PRO

189,90 €

692 reviews

Delivered from Wed 28 Oct.

Free returns within 30 days

Who did we design it for?

The Pro range is built for reliability, durability and comfort: for trail runners tackling long, technical races in rain and high-altitude winds, sometimes at night.

What makes it different?

Our ULTRASHELL® technology: a 3-layer membrane offering maximum rain protection, even after hours under rucksack straps.

How waterproof is it?

20'000 mm Schmerber waterproof rating, taped seams, water-repellent YKK Aquaguard® zips and a close-fitting hood with a stiff peak.

How breathable is it?

It wicks away sweat at 80'000 g/m²/24h. Like any waterproof jacket, it can trap moisture during intense effort in the rain: open the zip from the bottom to ventilate.

Its performance

Breathability

80'000 g/m²/24h

Lightweight

285 g (M)

Waterproofing

20'000 mm (Schmerber)

Wind protection

Strong wind, 60 to 90 km/h

Ideal for

Trail running

The jacket that goes the distance

On an ultra, the weather can change without warning: driving rain, high-altitude wind, darkness. If your protection fails, it breaks your rhythm and makes every stride harder.

Its three-layer membrane offers the ultimate rain protection, even after hours on your back beneath your pack straps. Taped seams, water-repellent zips and a hood with a stiff peak keep out rain and wind. The jacket stays out of your way so you can hold your rhythm.

Because the biggest challenges demand kit that goes the distance: it meets mandatory kit lists for ultra-trails, even the strictest ones.

Key features

Hood magnet

Magnetic closure to keep the hood against your back when not in use.

YKK Aquaguard® Zips

Water-repellent zips to prevent water ingress.

Retention lug

Allows you to run with the jacket open without it coming off.

Central zip with double sliders

The central dual-slider zip also opens from the bottom, so you can ventilate whenever you need to.

Protective hood

The fitted hood and stiff peak shield you from rain and wind.

Thumb loops

Thumb loop system to keep sleeves in place.

Reflective elements

To be seen at night.

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

285g (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)

Size type

Men's Top

Traceability

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

Reviews

4.8

Based on 692 reviews

5

90%

4

5%

3

1%

2

1%

1

0%

Customers recommend the usual size

Breathability

Water resistance

Compactness/Weight

In summary This content is written by AI

Customers especially appreciate its waterproofing, described as impressive or perfect after outings in heavy rain, including 10 to 15 km in continuous rainfall. They also praise its very high-quality construction, neat finishing, and a jacket that is light, comfortable and well fitted, with practical details such as thumb loops and a hood magnet. Breathability can nevertheless disappoint during exertion or prolonged rain, and the lack of side hand pockets is worth knowing before choosing it. It is particularly suited to trail running, hiking and mountain biking.

richard.l

Verified customer

Ordered size L Ordered color Rouge

19/12/2025

Very helpful company. Great jacket so far so good. Need to try it in more rain but pleased so far. If you need to put an insulation jacket or warmer layer maybe better going up a size as a bit snug. Will be ordering another in the future but a size larger.

Glyn.C

Verified customer

Ordered size L Ordered color Vert

29/07/2024

Really looking forward to using it on the trails, very comfortable and well fitted

Lal.J

Verified customer

Ordered size L Ordered color Marine

26/03/2024

The jacket arrived in good condition except for a deep crease in the plastic visor that must have happened during its journey to me. Otherwise a great jacket, and my second.

Stephen.K

Verified customer

Ordered size 2XL Ordered color Anthracite

29/08/2023

Good fit but haven't tried out in poor weather as yet

Loïc.G

Verified customer

Ordered size S Ordered color Kaki

Translated review

10/03/2026

User review: Jacket tested on the 2026 Black Mountain Trail (44 km) Performance in the rain: I was able to test this jacket in challenging conditions during the 2026 Black Mountain Trail (44 km), in numerous downpours. Result: 100% waterproof – I stayed perfectly dry (apart from perspiration, of course). A real asset for trail running in the rain, where thermal comfort and protection against moisture are crucial. Size selection: At 1.79 m tall and weighing 69 kg, with a chest circumference of approximately 95 cm, I hesitated between the S and the M. I finally opted for the M for two reasons: Versatility: Being able to wear it over my vest if needed (although, in the end, I mostly wore it underneath during the race). Comfort: I avoided a too-tight fit that could have clung to my skin in the rain and restricted my movements. Fit and Ergonomics: Choosing the medium size proved wise: the jacket remains roomy enough for optimal freedom of movement without being too loose. Even though I spent most of the race wearing the jacket under my vest, this flexibility is a real plus. Attached Photo: To illustrate the fit, I'm sharing a photo of the jacket in action. You can clearly see its natural fit and functional design, even after several hours in the rain. Conclusion: A reliable, versatile, and comfortable jacket, ideal for trail running in rainy or windy conditions. Choosing the medium size was perfect for my build and my running needs. A worthwhile investment for trail running enthusiasts who enjoy changing conditions!