Which size should I choose?

Choose your usual size and check it against the size guide on the product page. Several customers find the fit snug, especially around the neck: if you’re between sizes or prefer more room, size up.

How cold can it be worn in?

Some customers wear it at around 0 °C under a lightweight jacket. It is designed for the coldest winter days and long stops. Add a fleece over it for even more warmth. For sustained effort in milder weather, our single-fabric base layer is enough.

What is it made from?

It combines two hollow-fibre fabrics made from 100% polyester, weighing 175 and 165 g/m², with no wool. The material dries quickly and stands up well to repeated use.

What should you wear underneath and over it?

Wear nothing underneath: put it directly against your skin. A cotton t-shirt traps moisture and leaves you cold during stops. In extreme cold, add a fleece over it, then a waterproof jacket for protection against wind and bad weather.

Does it limit odours?

Yes. POLYGIENE® StayFresh technology limits the growth of bacteria responsible for unpleasant odours, so you can wash it less often. It does not replace washing, especially after a particularly sweaty outing.

Zip neck or crew neck: which should I choose?

The half-zip protects your neck when closed and opens for ventilation on climbs. The crew-neck version, available via the options on the product page, fits under a neck warmer without added volume.

How should I wash this thermal top?

Wash it at no more than 30 °C without fabric softener: softener blocks the fabric’s micropores and reduces its ability to wick away sweat. Leave it to air-dry; it dries quickly. Avoid tumble-drying.

What are the delivery times for this product?

All orders placed by midnight are prepared the next day. In France, orders placed before 1 pm (excluding weekends) with Chronopost 24h are dispatched the same day. Delivery then depends on the carrier and takes 1 to 4 days in France. Delivery times for Europe and the rest of the world vary by destination.

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.

Very warm women’s thermal top - X-Warm Zip 5

69,90 €

55 reviews

Insulating

Stretch

220 g (size S)

Sky

Delivered from Thu 12 Nov.

Free returns within 30 days

Available in several versions

Men Women

Crew neck Half-zip

Free repairs for life

By La Réparerie, our repair service.

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X-WARM ZIP

69,90 €

55 reviews

Delivered from Thu 12 Nov.

Free returns within 30 days

Who did we design it for?

For women active in very low temperatures, whether ski touring, mountaineering or glacier hiking, who need substantial insulation without restricting movement.

How warm are they?

Very warm. Two insulating fabrics of 175 and 165 g/m² and the hollow fibres of our CIMATHERM® technology retain heat, even during stops in extreme cold.

How does it manage moisture?

The fabric wicks away sweat and dries quickly, so it does not stay damp against your skin when you stop moving.

What makes it different?

Two insulating fabrics and a zipped high collar: closed, it protects your neck from the cold; open, it lets heat escape on climbs.

Its performance

Drying time

Very fast

Durability

Highly durable fabric

Stretch

Stretch fabric

Warmth

Very warm

Ideal for

Alpine skiing

Cross-country skiing

Ski hiking

Hiking

Snowshoes

Freeride

Mountaineering

The warm top you can unzip in one move

Two insulating fabrics, one garment. Designed for women, its cut follows the body without restricting movement.

Open the half-zip at the neck in one motion to release excess heat during exertion, then close it when you stop to retain warmth. No need to take a layer off and put it back on every time your pace changes.

In severe or moderate cold, this top adapts to your plans: wear it alone under a jacket on fast ascents, or pair it with a fleece for exposed bivouacs.

Key features

Dual-fabric construction

- Double thermal barrier to tackle extreme cold conditions.

Stretch fabric

- No restriction of movement thanks to its stretch fabric.

POLYGIENE® StayFresh technology

CIMATHERM® Technology

Contrôle durable des odeurs pour un confort prolongé pendant l’activité.

Technologie anti-odeurs : limite le développement des bactéries responsables des mauvaises odeurs.
Entretien réduit : permet d’espacer les lavages et de prolonger l’usage du vêtement.
Confort préservé : traitement intégré qui n’altère ni la respirabilité ni le toucher du textile.

Développée par Polygiene®, spécialiste des technologies de contrôle des odeurs, la technologie POLYGIENE® STAYFRESH™ assure durabilité et efficacité dans le temps.

Targeted warmth suited to activities in cool conditions.

Effective insulation : retains body heat during outings in cool weather.
durable Thermal Comfort : maintains a good thermal balance, both in motion and during rest phases.
Soft-touch fabric : comfortable to wear, even during extended use.

CIMATHERM technology favours resistant materials to ensure durability and long-lasting thermal performance over time.

Details

Specifications

Weight

220g (S)

Brand

Cimalp

Fabrics

Main fabric: 100% Polyester; secondary fabric: 100% Polyester

Insulation

Very warm

Size type

Women's Top

Traceability

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

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Reviews

4.9

Based on 55 reviews

5

96%

4

1%

3

1%

2

0%

1

0%

Customers recommend the usual size

In summary This content is written by AI

Customers especially appreciate its warmth, comfort and quality: many find it very warm, pleasant against the skin and effective in cold weather. They also praise its breathable fabric, which moves with the body; at 7°C, in humidity and a light wind, one wearer found it warm and comfortable. The zipped collar, long cut protecting the sacrum and use as a base layer are considered very practical. Be aware that the fit is often very snug: choose one size up, especially if you prefer more room around the neck.

Elvira.M

Verified customer

Ordered size XS Ordered color Ciel

27/01/2026

Very good quality

Rosanna.C

Verified customer

Ordered size S Ordered color Bleu

Translated review

05/11/2024

Bought in size S for a size 42. Perfect! Very warm, soft, and snug. Recommended. Quick and accurate delivery, as always.

Paola.V