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.

Women’s lightweight packable down jacket – Chulu

Q: Is it warm enough for mountaineering?

It provides extra warmth at belay stations, during a bivvy and when stopping on snow. In very cold conditions, add a warm layer underneath.

219,90 €

3 reviews

Harness-compatible

Helmet-compatible

Insulating

250 g (size S)

navy

Delivered from Mon 26 Oct.

Free returns within 30 days

Available in several versions

Men Women

With hood Without hood

Free repairs for life

By La Réparerie, our repair service.

CHULU

219,90 €

3 reviews

Delivered from Mon 26 Oct.

Free returns within 30 days

Who did we design it for?

For women who go mountaineering and ski touring and 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?

250 g in size S. 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

250 g (S)

Warmth

Wind protection

Moderate wind, 40 to 60 km/h

Ideal for

Mountaineering

Ski hiking

Hiking

Warmth you forget is in your pack

On a ski touring trip, you feel every gram in your pack in your legs. In mountaineering, every extra layer restricts movement. We needed a down jacket that didn’t force a compromise.

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 stopping on the snow or at a bivvy.

Because the best layers are the ones you forget are in your pack until you need them.

Key features

Helmet-compatible hood

The hood is compatible with the wearing of a mountaineering helmet.

Harness-compatible pockets

Pockets are positioned to remain accessible even when wearing a harness.

Chest pocket

Chest pocket to keep essential items within easy reach.

Minimalist

This down jacket will provide the warmth you need 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

250g (S)

Brand

Cimalp

Wind resistance

Moderate wind, 40 to 60 km/h

Waterproofing

DWR water-repellent treatment

Size type

Women's Top

Traceability

Manufacturing: China
Main fabric: 100% nylon
Weaving/Knitting: China
Dyeing/Printing: China
MATERIAL CHARACTERISTICS: Releases plastic microfibres into the environment when washed

Reviews

4.3

Based on 3 reviews

5

66%

4

0%

3

33%

2

0%

1

0%

Customers recommend the usual size

Warmth

Comfort

Packability

Cécile L.

Verified customer

Height 160cm Usually wears XS Usage Randonnée

Translated review

16/09/2026

Very good down jacket: comfortable and lightweight. The hood wraps nicely. I’ve used it for hiking so far. Warm and packs down really well. I recommend it!

Emnis ..

Verified customer

Ordered size XS Ordered color Noir

Translated review

14/04/2026

Very pretty and comfortable. My usual size is M and it fits perfectly. It has a feminine cut and the color is exactly as pictured.

Michèle.M

Verified customer

Ordered size XS Ordered color Noir

Translated review

26/01/2026

Still to be tested in very cold conditions while alpine skiing... regrets the lack of pockets