
Best selling Functional underwear
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Hi-Tec Thermoaktiv Set
The thermoactive underwear set for men, consisting of a sweatshirt and pants, offers an optimal solution for cold winter days and outdoor sports activities. Made from 100% polyester, the set is characterized by its thermal insulation and moisture-wicking properties, ensuring a comfortable wearing experience. The long cut of the pants and the leggings provide additional comfort and protection while allowing freedom of movement. This set is ideal for various sports, especially skiing, as well as for indoor training sessions. The black color gives it a timeless and versatile look that easily pairs with other clothing items. The Sorin set is designed for adults and is available in size L, making it a practical choice for active men who value functionality and style. Whether for sports or leisure, this underwear set is a reliable choice for the cold season.

2. Smartwool Sport Boxer Brief
Our Merino Sport 150 Boxer Briefs for men are designed to perform well on all the paths and roads you traverse during your adventures. They feature a double front for added support, flatlock seams to reduce friction, and a wide, elastic waistband lined with Merino wool for extra comfort. Made from a fabric that combines the moisture-wicking, thermal-insulating, and odor-resistant properties of Merino wool with the durability and quick-drying capabilities of polyester, these boxer briefs are designed to keep you cool and dry while you enjoy your outdoor activities.
Weight: 76 g
Composition: Main Body: 56% Merino wool, 44% polyester. Back Panel: 54% Merino wool, 46% polyester. Exclusive of decoration.

3. Rukka Lucas
The Rukka men's Lucas merino thermal trousers are the perfect companion for outdoor activities in the cold season. Made from high-quality merino wool, these thermal trousers offer good insulation that keeps your legs warm without restricting your freedom of movement. Weighing just 200 g, they ensure optimum comfort for long hikes or other outdoor adventures. The elasticated waistband and leg cuffs offer a good fit and additional comfort. The trousers are also easy to care for and can be washed at 30°C on a wool cycle without losing their quality.

4. Odlo Active Warm
The Active Warm Pants from Odlo are the ideal companion for your mountain sports activities. The breathable material ensures an optimal body climate. Even after very intense activities, the fabric dries quickly. The rapid moisture transport prevents the body from cooling down. The fabric is odor-neutralizing, so it needs to be washed less frequently. The elastic material supports every movement.

5. Rohner Thermo Leggings
What makes our thermal leggings so special is their unique design, which offers outstanding warmth and comfort. You will love the velvety soft, lightweight material. You can use them as warm underwear leggings for winter sports and other outdoor activities in cold weather.

6. Rukka Merlin
Merlin trousers. Merino underwear made from merino wool for those who like to stay warm. Ideal as a first layer for any outdoor adventure during the cold season.

7. Odlo Active X-Warm
The Active Warm Pants from Odlo are the ideal companion for your mountain sports activities. The breathable material ensures an optimal body climate. Even after very intense activities, the fabric dries quickly. The rapid moisture transport prevents the body from cooling down. The fabric is odor-neutralizing, meaning it needs to be washed less frequently. The elastic material adapts to every movement.

8. Odlo Natural 200
The Natural Merino 200 Tights are made from exceptionally soft and warm mulesing-free merino wool with a weight of 200 g/m². Since the material is naturally thermoregulating and antimicrobial (i.e., odor-reducing), you can wear these functional underwear repeatedly, no matter what sport you pursue.
This incredibly versatile and comfortable base layer is manufactured with the highest precision in our factory in Europe.
Natural comfort for your next outdoor adventures.

9. Ortovox 185 ROCK'N'WOOL LONG PANTS
The 185 Rock'n'Wool Long Pants for men are exceptionally soft thanks to fine merino wool and keep you warm during every freeride adventure, even in cold and strenuous conditions. Freeriding starts with the first layer, as it is crucial for functionality. The long pants are made of 100 percent pure merino wool with a fineness of 19 microns, which feels pleasant against the skin and provides an optimal climate due to its temperature and moisture-regulating properties. This classic comes with a completely new design: the two-tone look, fresh colors with multi-colored twisted yarn, and a trendy waistband reflect the versatility of your winter adventures. Therefore, the 185 Rock'n'Wool Long Pants for men should not be missing from any freeride outfit!.

10. Icebreaker Everyday
A perfect base layer for everyday use and a reliable companion for travel all year round. Made from breathable merino rib knit fabric, the 175 Everyday Leggings move with your body, keeping you warm in cool weather and cool in warm conditions. Thanks to its natural odor-resistant properties, it can be worn for several days, making it ideal for travel.
