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.

Men’s thermal base layer with zip collar

49,90 €

21 reviews

Insulating

Stretch

230 g (size M)

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.

Complete your outfit

MERINO SOCKS

Warm merino wool socks

19,90 €

HYBRID

2-in-1 thermal gloves with a windproof flap

39,90 €

WARM ZIP

49,90 €

21 reviews

Delivered from Wed 4 Nov.

Free returns within 30 days

Who did we design it for?

For active men who ski, hike or run trail in winter and want a comfortable, adjustable thermal base layer. Suited to moderate to intense activity in cold conditions.

How should you wear it?

Wear next to the skin as a base layer, under a fleece or a jacket. Open the zip on the way up to release heat, close it during breaks. The close-fitting men's cut prevents bunching under other layers.

What makes the difference?

This men's thermal top combines active insulation and heat management thanks to its half-zip collar. One gesture is all it takes to regulate ventilation according to effort intensity — no need to undress. Effective and versatile.

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

The zip that changes everything

A thermal base layer without a zip means a forced choice between warm and breathable. With the half-zip collar, you choose in real time based on effort, gradient and temperature. Two seconds to adjust — no stopping, no removing gloves.

The close-fitting men's cut makes this top a natural extension of the skin. Stretch fabric that moves with every motion, impeccable support during dynamic phases, discreet under outer layers. No bunching, no creasing.

For all winter activities where conditions never stay stable, this WARM top is the base layer of choice for pragmatic athletes.

Key features

POLYGIENE® StayFresh Technology

Durable odour control for lasting comfort during activity.

Zip collar

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

Stretch fabric

Moves with you through dynamic effort — no friction, no restriction.

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

230g (M)

Brand

Cimalp

Fabrics

100% Polyester

Insulation

Warm

Size type

Men'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

Complementary products

+6

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QUEBEC

Extreme Cold Travel Trousers in Softshell - Men

(127)

89,90 €

+3

ADELIE

Warm half-zip fleece sweatshirt THERMOPOLAR® 200 - Men's

(234)

49,90 €

+1

MALLET

Men’s hoodless jacket with CIMALOFT® synthetic insulation

(295)

139,90 €

Reviews

4.9

Based on 21 reviews

5

90%

4

9%

3

0%

2

0%

1

0%

Customers recommend the usual size

Comfort

Warmth

Breathability

In summary This content is written by AI

Customers love this base layer: several find it comfortable, pleasant to wear and discreet beneath another layer, while also finding it warm. It has been used for hunting, snowshoeing, walks of 10 to 13 km and skating sessions, with one customer saying it is perfectly suited to their needs. Feedback on sizing is mixed: it fits some customers well, while one takes a size below their usual choice and another finds it large, so check the fit carefully before choosing.

Bernard F.

Verified customer

Height 183cm Usually wears L Ordered size L Ordered color Marine Usage Randonnée

Translated review

24/10/2026

I wear it in town too. Very pleasant and comfortable, keeping me warm without sweating on the bike. More breathable than cotton T-shirts.

Christian.S

Verified customer

Ordered size S Ordered color Marine

Translated review

21/01/2026

Usually, I wear size M for my clothes, but with CIMALP, size S fits me well. On this item, the collar is a bit tight.