Which size should I choose?

Choose your usual size and check it against the size guide on the product page. The fit is close to the body: some customers find it a little tight around the armholes, while others find it a little long.

Is it warm enough for winter?

This is a warm but lightweight top, not a thick garment: some customers expected it to be warmer. It suits active outings in cold weather but is not windproof. In very cold weather, add another layer or a jacket.

Does it wick away sweat effectively?

Yes: it is fully breathable and the fabric dries quickly. On climbs, open the half-zip for extra ventilation.

Does it retain odours?

The POLYGIENE® StayFresh treatment helps limit odours and bacteria during activity. It does not replace washing: wash the top after an outing that leaves you particularly sweaty.

How should I wear this top?

Wear it next to the skin as a base layer, or on its own in cool weather. When it is colder or windy, add a jacket or softshell over it. The thumb loops keep the sleeves in place under gloves.

What is a thermal top?

A thermal top is a base layer that retains body heat and wicks away sweat. This one is made from polyester and elastane: warm without being bulky, it can be worn on its own in cool weather or under a jacket.

How should I wash this top?

Wash at 30 °C maximum, without fabric softener: it clogs the fabric’s micropores and slows the release of sweat. Air-dry it and avoid tumble-drying.

Is it made from merino wool or synthetic fibres?

It is synthetic: 90% polyester and 10% elastane, in a 180 g/m² fabric. It contains no merino wool.

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.

Men’s thermal t-shirt with zipped collar - Argentieres

59,90 €

186 reviews

Insulating

Antibacterial

240 g (size M)

Fir Tree

Delivered from Tue 17 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

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2-in-1 thermal gloves with a windproof flap

39,90 €

RUN HIGH

Merino wool trail running socks - high cut

18,90 €

ARGENTIERES

59,90 €

186 reviews

Delivered from Tue 17 Nov.

Free returns within 30 days

Who did we design it for?

For trail runners and hikers heading out in cold weather who want a warm, stretchy and breathable top to wear on its own or as a base layer.

How warm is it?

Warm: SMARTWARM® fibres feel gently warm against the skin without adding bulk. In very cold weather, add another layer or a windproof jacket.

How breathable is it?

Fully breathable: the fabric wicks away sweat and dries quickly. On climbs, open the half-zip for extra ventilation.

What makes it different?

Our CIMAFLEX PLUS technology adds flexibility: the fabric moves with you. The POLYGIENE® StayFresh treatment helps limit odours and bacteria during activity.

Its performance

Breathability

Drying time

Quick

Lightweight

240 g (M)

Stretch

Stretch fabric

Ideal for

Hiking

Trail running

Warmth without restriction

In cold weather, the right kit makes the difference between enduring an outing and being in control of it. A top that’s too thick restricts movement. Too thin, and the cold creeps in.

This top keeps you warm without bulk and lets sweat escape. Its stretch fabric moves with your stride, the half-zip opens for ventilation as the climb gets steeper, and the thumbholes keep your wrists warm under your gloves.

A small zipped pocket at the back holds the essentials, while reflective details help you stay visible as daylight fades. From winter trail runs to high-altitude hikes, it keeps pace.

Key features

SMARTWARM® fibres

They provide a genuine feeling of warmth, well-being and softness against the skin.

Anti-odour treatment

Its treatment effectively limits odours and bacteria

Thumb loops and integrated pocket

Thumb loops to protect wrists from cold and wind
Zipped back pocket + reflective prints for safety

Stretch fabric

Its fabric delivers increased stretch, freeing your movements for greater comfort and performance.

POLYGIENE® StayFresh technology

CIMAFLEX PLUS 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.

Flexibility and performance for dynamic mountain activities.

Technical stretch: fabric designed to move with rapid, committed movements.
quick-drying : efficiently wicks moisture to keep you comfortable during exercise.
Comfort at intensity : supports effort while remaining comfortable to wear as the pace picks up.

CIMAFLEX PLUS technology prioritises resistant materials to ensure durability and sustained performance over time.

Details

Specifications

Weight

240g (M)

Brand

Cimalp

Breathability

Total breathability

Fabrics

90% Polyester, 10% elastane

Insulation

ALL SEASONS

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

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+3

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Reviews

4.9

Based on 186 reviews

5

94%

4

3%

3

1%

2

0%

1

0%

Customers recommend the usual size

Comfort

Breathability

Quick-drying

In summary This content is written by AI

Customers appreciate its lightness and comfort, with a soft, pleasant fabric sometimes described as feeling like a second skin. Many find it breathable, while several value the gentle warmth it provides without getting in the way during outings in cool weather, especially running or hiking. Several customers also praise its stretchy, close-fitting cut, along with the practical zipped back pocket. It is particularly well suited to mountain activities and early-morning training.

STEERS F.

Verified customer

Usually wears M Ordered size M Ordered color Noir Usage Trail running

Translated review

06/11/2026

A revelation, the best long-sleeve shirt I've ever tested.

Pierre B.

Verified customer

Usually wears S Ordered size S Ordered color Noir Usage Trail running

Translated review

12/11/2026

Very pleasant to wear, perfect fit. This is my second purchase of this model.

JEAN-PAUL.F

Verified customer

Ordered size S Ordered color Bleu

Translated review

17/11/2025

This jersey, ordered in size S, fits me perfectly at 1.80m and 63kg. It's very lightweight and ideal for running. Delivery was very fast, as usual.

Balazs K.

Verified customer

Height 180cm Usually wears L Ordered size L Ordered color Sapin Usage Randonnée, Alpinisme

26/09/2026

Very comfortable, but smells very quickly, after two hours of hiking, an immedaite wahing is necessary. Unfortunately, the desired colors were not available

michel.p

Verified customer

Ordered size S Ordered color Gris

Translated review

03/07/2024

I ordered a size M in blue, which was a bit too big for me. So I ordered this one in S and it fits perfectly. The quality is excellent: lightweight, breathable, warm, and close-fitting—ideal for winter trail running on Réunion Island. The zipper is a nice touch, and the yellow logo looks great. It's a shame there aren't more color options. I highly recommend it!

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F.A.Q

We answer your questions

Need help?

Our team of experts, based in Valence in the Drôme, will get back to you quickly by email, from product advice to order tracking.Based in the French Alps, our specialist team provides prompt email support for product guidance, order tracking, and any other inquiries.

Frequently asked questions Contact us

ARGENTIERES - Men

Free repairs for life

Complete your outfit

Who did we design it for?

How warm is it?

How breathable is it?

What makes it different?

Its performance

Ideal for

Warmth without restriction

Key features

SMARTWARM® fibres

Anti-odour treatment

Thumb loops and integrated pocket

Stretch fabric

Details

Specifications

Complementary products

Reviews

In summary This content is written by AI

Explore the category Men's hiking t-shirts

We answer your questions

Need help?

FAQ

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