Can I wear a cotton t-shirt underneath?

This is strongly inadvisable. Cotton retains moisture and dries very slowly, leaving you feeling cold during rest stops. Wear this technical garment directly against your skin.

What should I wear over this garment?

This model is designed to act as a second skin. Its role is to wick away moisture and keep you dry. If it's cold, add a fleece on top (second layer). To protect yourself from the elements, wear a waterproof jacket as your third layer.

How should I wash this garment to preserve its breathability?

Wash at a maximum of 30°C. The golden rule for sportswear is to avoid fabric softener: it clogs the micro-pores of the fabric and blocks moisture wicking. Air drying is very quick — avoid the tumble dryer.

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 warm thermal base layer with zip collar WARM ZIP F

49,90 €

58 reviews

Insulating

Stretch

155 g (size S)

Black

Delivered from Wed 4 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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WARM ZIP

49,90 €

58 reviews

Delivered from Wed 4 Nov.

Free returns within 30 days

Who did we design it for?

For women who ski, hike or snowboarding in winter and are looking for a lightweight, breathable and adjustable base layer. Ideal for activities where you alternate between ascent and descent.

How should you wear it?

Worn directly against the skin as a base layer, under a fleece or a ski jacket. The women's cut follows the torso without creating volume. Open the zip on the ascent, close it during breaks or on the lifts.

What makes the difference?

A women's thermal base layer that adapts to effort intensity. The half-zip collar provides precise and instant ventilation — warm on the way up, cold on the way down, the top responds in real time. Fitted cut, comfortable stretch fabric.

Its performance

Drying time

Very fast

Durability

Highly durable fabric

Stretch

Stretch fabric

Warmth

Warm

Ideal for

Alpine skiing

Cross-country skiing

Ski hiking

Hiking

Snowshoes

Freeride

Insulation that adapts to you

A day in the mountains is rarely a single intensity. You climb, you sweat. You stop, you cool down. This women's thermal top features a half-zip collar that transforms the base layer into an active thermal regulator — you control the warmth as you go.

The fitted feminine cut is designed to sit cleanly under all outer layers. No bunching, no riding up. The stretch fabric moves with your arms and shoulders without ever pulling or restricting. Total freedom of movement from start to finish.

Lightweight, breathable, effective: a versatile base layer for all winter activities for active women.

Key features

POLYGIENE® StayFresh Technology

Long-lasting odour control for extended comfort during activity.

Stretch fabric

Moves with you — no friction, no restriction during dynamic efforts.

zip collar

Quick opening to ventilate during effort or retain heat at rest — in a single move.

CIMATHERM® Technology

POLYGIENE® StayFresh technology

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.

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.

Details

Specifications

Weight

155g (S)

Brand

Cimalp

Fabrics

100% Polyester

Insulation

Warm

Size type

Women'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

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Reviews

4.9

Based on 58 reviews

5

94%

4

3%

3

0%

2

1%

1

0%

Customers recommend the usual size

In summary This content is written by AI

Customers love its warmth, which they find effective without being excessive, as well as its excellent comfort: the fabric feels pleasant and is easy to forget once worn. Many also appreciate the balance between its thinness and effectiveness, with some finding it warm and lightweight at the same time. Several praise the improved, comfortable cut, particularly around the arms and armholes. One customer highlights its breathability and thermal comfort. It is especially suitable for anyone looking for a warm, lightweight and comfortable base layer for everyday wear.

claire.P

Verified customer

Ordered size XS Ordered color Ciel

Translated review

03/02/2026

Very comfortable to wear and warm for my region, the collar is a little narrow in size M

Annick.L

Verified customer

Ordered size XL Ordered color Bleu

Translated review

06/03/2025

Beautiful and warm, comfortable. I took an XL for a size 42 and it fits perfectly.

Giorgio E.

Verified customer

Ordered size L Ordered color Bleu

Translated review

29/10/2024

Excellent fit. It retains body heat even in very cold climates. I'd say it's excellent and comfortable, even during sports activities.

Thomas.B

Verified customer

Ordered size S Ordered color Noir

Translated review

06/03/2025

Having been won over by the first version, which, however, felt restrictive in the arms and armholes, I am delighted with the change in cut which makes the new version comfortable.

Sophie.M

Verified customer

Ordered size XS Ordered color Noir

Translated review

19/12/2025

A remarkable product that offers impressive efficiency considering the fineness of the fabric, ensuring thermal comfort and breathability.