Does it withstand snow and rain?

It is water-repellent, not waterproof: its DWR treatment sheds light snow. In wet weather, wear it under a waterproof jacket.

How should you wear it?

Wear it over a thermal base layer: as an outer layer in cold, dry weather, or as a mid-layer under a waterproof jacket when it rains or snows.

Does the hood fit over a helmet?

Yes, the hood fits over a mountaineering helmet.

How many pockets does it have?

Two zipped side pockets, positioned to stay accessible while wearing a harness.

What down does it use?

RDS-certified, 800 cuin duck down: 95% down and 5% feathers.

Which size should I choose?

Choose your usual size: it fits true to size.

How do I care for my natural down jacket?

Wash in cold water with a specialist liquid down detergent and no fabric softener. Dry by patting regularly to redistribute the down: ideally in the tumble dryer on a gentle cycle with tennis balls. If the down clumps together, a water-repellent treatment (Down Proof) is recommended.

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 lightweight packable down jacket – Piaju

219,90 €

7 reviews

Harness-compatible

Helmet-compatible

Insulating

300 g (size M)

Brown

Delivered from Mon 26 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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PIAJU

219,90 €

7 reviews

Delivered from Mon 26 Oct.

Free returns within 30 days

Who did we design it for?

For mountaineers and skiers heading out on hiking trips who want an ultralight layer for extra warmth that fits into a summit pack.

How warm is it?

Extra warmth: 800 cuin natural down keeps you warm at belay stations, during a bivvy and when stopping on snow. In very cold conditions, add a warm layer underneath.

How much does it weigh, and how small does it pack?

300 g in size M. Highly compressible, it packs down to fit in your hand and takes up very little room in a summit pack.

What makes it different?

Our CIMACUIN technology: RDS-certified, 800 cuin natural down that packs down into the bottom of your rucksack and insulates as soon as you put it on. An excellent warmth-to-weight ratio.

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

Not a gram to spare

At the start of a climb or a ski touring trip, anything you don’t need weighs you down. We needed an emergency layer that wouldn’t take up room needed for other kit in your summit pack.

This down jacket packs down small enough to fit in your hand and takes up next to no space. Its natural down delivers immediate warmth when you pull it on at a belay; its helmet-compatible hood and pockets accessible under a harness are designed for technical climbing.

Its water-repellent treatment sheds light snow, whether you’re at a belay or on a bivvy.

Because an emergency layer is only useful if it’s in your pack when you need it.

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.

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.

Details

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

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!

Denis.B

Verified customer

Ordered size M Ordered color Kaki

Translated review

04/12/2025

Really light and compressible. Used actively in the winter and statically in the summer. I don't have enough perspective yet, but the level of warmth provided seems to correspond to this program. For an alpine-oriented jacket, one could almost expect a double zipper (the existing one works very well with one hand) for use with a harness.

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.

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.

Nathalie ..

Verified customer

Ordered size M Ordered color Bleu

Translated review

04/11/2025

A very nice product, lightweight and very comfortable.