Name: Lightweight men's down jacket for mountaineering and ski touring - PIAJU
Brand: Cimalp
SKU: CIM25002213
Rating: 4.7 (7 reviews)

219,90 €

7 reviews

Blue

Delivered between 8 - 13 Oct.

Free returns within 30 days

Available in several versions

Men Women

Our guarantee: we repair your gear for life

A repaired garment is a story extended. We ensure the longevity of your Cimalp equipment, season after season.

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PIAJU

219,90 €

7 reviews

Delivered between 8 - 13 Oct.

Free returns within 30 days

Who did we design it for?

For the mountaineers and ski touring practitioners who need an ultralight emergency thermal layer in their summit pack.

At a bivvy, on a route belay or stopped on snow, you need insulation that holds against the gusts without weighing down the pack.

Those who won't tolerate a single unnecessary gram in their pack but refuse to sacrifice thermal protection when the cold sets in.

How should you wear it?

As an outer layer in cold, dry conditions, or as a mid layer under a hardshell in wet weather. Over a thermal base layer.

Alpine fit — your usual size.

What makes the difference?

Its 300g lightweight design makes it the benchmark insulating layer for mountaineering and ski touring - the most compact 800 cuin natural down for outings where every gram counts.

Its performance

Compressibility

Ultra-packable

Lightweight

300 g (M)

Warmth

Wind protection

Moderate wind, 40 to 60 km/h

Ideal for

Mountaineering

Ski hiking

Hiking

Lighter, higher, further.

When ski touring, every gram in your pack is felt in your legs. In mountaineering, every added layer restricts mobility. A down jacket that was no longer a compromise was needed.

It weighs 300g and packs down into your hand. Its natural 800 cuin down provides instant warmth from the first seconds at the belay. When compressed, it fits in one hand. Its water-repellent treatment preserves the down’s properties even in fine snow.

Because the best layers are the ones you forget in your pack until the critical moment. Extreme lightness, uncompromising warmth.

Key features

Helmet-compatible hood

The hood is compatible with wearing a mountaineering helmet.

Harness-compatible pockets

The pockets have been positioned so they remain accessible even when wearing a harness.

Chest pocket

Chest pocket to keep essential items within reach.

Minimalist

This down jacket will keep you warm without taking up space in your pack.

Harness-compatible

Helmet-compatible

Insulating

Harness-compatible

Helmet-compatible

Insulating

Harness-compatible

Helmet-compatible

Insulating

Harness-compatible

Helmet-compatible

Insulating

CIMACUIN Technology

Natural insulation delivering excellent thermal output in cold conditions.

High fill power (cuin) : natural down creating insulating air pockets to effectively retain body heat.
Very high compressibility : compacts tightly to reduce the garment's volume and make storage easier.
Exceptional warmth-to-weight ratio: delivers optimal insulation while maintaining great lightweight performance.

CIMACUIN technology is built around down selected for its quality and durability, delivering reliable thermal performance over time.

Specifications

Weight

300g (M)

Brand

Cimalp

Wind resistance

Moderate wind, 40 to 60 km/h

Waterproofing

DWR water-repellent treatment

Size type

Men's Top

Traceability

Manufacturing: China
Main fabric: 100% Nylon
Weave/Knit: China
Dyeing/Printing: China
MATERIAL CHARACTERISTICS: Releases plastic microfibres into the environment when washed

Reviews

4.7

Based on 7 reviews

5

71%

4

28%

3

0%

2

0%

1

0%

Customers recommend the usual size

julien.R

Verified customer

Ordered size S Ordered color Noir

Translated review

12/01/2026

Excellent product, exactly as described. Provides very good heat and compresses easily into its pocket for storage.

Luc.M

Verified customer

Ordered size S Ordered color Noir

Translated review

10/04/2026

Paragliding isn't listed as a primary activity, yet that's its main use for it, due to its lightness and compressibility (in my case). Then come other mountain activities like hiking, mountaineering, etc. A very nice product and very well designed!

Serge.A

Verified customer

Ordered size S Ordered color Noir

Translated review

06/03/2026

Not yet fully tested in the field. Relatively true to size M for my 1.70m and 70kg. Good value for money compared to the competition, which often doesn't offer a chin guard for the closure at the same weight.

Fabienne .T

Verified customer

Ordered size M Ordered color Bleu

Translated review

29/12/2025

Très content de la doudoune.

Denis.B

Verified customer

Ordered size M Ordered color Kaki

Translated review

04/12/2025

Vraiment légère et compressible. Utilisée en actif l'hiver et statique l'été. Je n'ai pas encore assez de recul, mais le niveau de chaleur apportée semble correspondre à ce programme. Pour une veste orientée alpi, on pourrait presque attendre un double zip (l'existant fonctionne très bien à une main) pour l'utilisation du baudrier.