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 do I wash and dry my merino wool garment?

Wash inside out on a delicate or wool cycle (max 30°C and 500 rpm), using a quality detergent and no fabric softener. Avoid the tumble dryer to prevent shrinkage. Leave to dry flat naturally, away from direct sunlight.

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 merino wool thermal tights

59,90 €

13 reviews

Antibacterial

Insulating

Thermoregulation

183 g (size M)

Black

Delivered from Fri 30 Oct.

Free returns within 30 days

Available in several versions

Men Women

150 g/m² 200 g/m² 240 g/m²

Free repairs for life

By La Réparerie, our repair service.

Complete your outfit

MERINO SOCKS

Warm merino wool socks

19,90 €

ALPINE

Warm merino ski socks

24,90 €

WOOL PANT 200

59,90 €

13 reviews

Delivered from Fri 30 Oct.

Free returns within 30 days

Who did we design it for?

For winter hikers and ski tourers who wear technical trousers in extreme cold.

They need thermal leggings that add no volume under the trousers while keeping legs warm during descents and exposed rest stops.

This profile demands a second-skin comfort under the trousers and a natural warmth that doesn't restrict wide movements.

How should you wear it?

To be worn next to the skin under hiking or ski trousers for optimal insulation in extreme cold. The second-skin cut eliminates all chafing and stays invisible under trousers. Order your usual size.

What makes the difference?

Its merino wool 200 g/m² naturally insulates the legs under ski or hiking trousers, without creating any bothersome bulk during flexions on technical terrain.

Its performance

Drying time

Quick

Durability

Durable fabric

Stretch

Stretch fabric

Warmth

Warm

Ideal for

Alpine skiing

Cross-country skiing

Ski hiking

Hiking

Snowshoes

Natural warmth under your trousers

Without a proper base, cold legs set in from the first descents. Trousers alone are insufficient in extreme cold, seams that irritate, a layer that rides up: the base layer must meet specific demands.

This boxer shorts harness the natural thermal regulation of merino wool. It keeps legs warm, wicks moisture generated during effort and neutralises odours over time. Its second-skin cut disappears under trousers, never restricting flexion or stride.

Because leg protection starts at the skin. No compromise between warmth and freedom of movement.

Key features

Fabric with merino wool

Natural warmth and thermal regulation for durable comfort in the mountains.

Tailored fit

Slim fit designed to be worn under ski or hiking trousers. No extra volume, no visible bulk under the trousers.

Comfortable elastic belt

Flexible elasticated belt that keeps the boxer shorts in place under the trousers.

CIMAWOOL Technology

Natural warmth and thermal regulation for durable mountain comfort.

Natural thermal regulation: helps maintain a stable body temperature, in cold weather and during sustained efforts alike.
Effective moisture management : wool fibres capable of absorbing and wicking away perspiration to keep you dry for longer.
Odour control : reduces the growth of odour-causing bacteria, even during prolonged use.

CIMAWOOL technology prioritises renewable natural fibres, renowned for their long-lasting durability and strength.

Details

Specifications

Weight

183g (M)

Brand

Cimalp

Insulation

Warm

Size type

Men's Bottoms

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 13 reviews

5

92%

4

7%

3

0%

2

0%

1

0%

Customers recommend the usual size

In summary This content is written by AI

Customers especially appreciate its comfort: several find it extremely comfortable, pleasant to wear and fitting like a glove. It provides welcome warmth, described as moderate by some and very substantial by others, while remaining breathable and preventing sweat from lingering. It is particularly appreciated for winter hiking. Good to know: one customer points out that it sits high on the hips and genuinely helps block out the cold, compensating for a top that is too short.

Stephane.B

Verified customer

Ordered size S Ordered color Marine

Translated review

04/02/2026

Fits perfectly. Comes up high on the hips. Really keeps out the cold (it compensates for the top being too short). Otherwise, I would have returned my entire order.

CHRISTIAN.N

Verified customer

Ordered size S Ordered color Marine

Translated review

22/01/2026

Very good, due to its comfort and the warmth it provides.

Cécile.A

Verified customer

Ordered size S Ordered color Marine

Translated review

07/04/2026

Don't smell of sweat!