Thermal Shirt in Merino Wool or Synthetic: Which One to Choose?

When temperatures drop and a new mountain season begins, the thermal shirt becomes the most important item in your technical wardrobe. It’s not just a simple t-shirt: it’s the layer that sits directly on the skin and determines most of your comfort and performance during activity.

The most common question before buying? Whether to choose a Merino wool thermal shirt or one made of synthetic fabric. Both have qualities and limitations, and understanding the differences helps you make a conscious choice.

Merino Wool Thermal Shirt: Natural and Versatile

Merino wool has long been one of the favorite fibers for those who practice trekking and winter skiing. It adapts to the body in different conditions, offering a balance that few other materials can guarantee.

Pros: natural thermoregulation, soft comfort on the skin, antibacterial properties that limit bad odors even after days of use.

Cons: longer drying times and more delicate care compared to synthetics.

For those facing multi-day winter treks or expeditions where changing clothes is not always possible, a Merino wool thermal shirt is a reliable and comfortable choice.

Synthetic Thermal Shirt: Practical and Resistant

Technical fibers like polyester and polyamide are designed for immediate performance, especially in high-intensity activities such as alpine skiing. They offer practicality and quick management, which often makes the difference.

Pros: ultra-fast drying, resistant to frequent washing, more affordable price.

Cons: they absorb odors more easily and may feel less comfortable than Merino during prolonged use.

Those who love skiing or dynamic outings, where the body produces a lot of sweat, will find the synthetic thermal shirt a reliable and easy-to-manage companion.

Audant-X®: The Smart Synthesis

For those who don’t want to choose, hybrid solutions are the answer. Audant-X® technology combines the natural properties of Merino wool with the functionality of recycled synthetic fibers.

The result is a thermal shirt that performs in every phase: Merino ensures comfort and freshness, technical fibers provide quick drying, and the combination guarantees a sustainable approach.

Perfect for anyone looking for a single garment capable of performing both during intense effort and in resting moments in the mountains.

The Choice That Makes the Difference

Whether it’s a women’s Merino wool thermal shirt for a winter trek, a synthetic ski thermal shirt for intense days on the slopes, or a hybrid garment with Audant-X®, the rule remains the same: the first layer is not a detail. It’s the foundation of every mountain outing.

With Audant, you can have a thermal shirt that combines the best of both worlds, designed to protect your skin and accompany you on every adventure.