The extrafine Merino wool sock is designed for training and sports activities in cold and winter temperate temperatures. We chose to use extrafine Merino to make this sock extremely lightweight yet very warm. Merino wool socks breathe and pleasantly warm the foot. The ribbed knitting in the central part provides better support to the foot and ensures a perfect fit of the sock. In contact with the skin, the sock gives a pleasant natural sensation.

The thermal Merino wool sock, ideal for cycling, running, and walking, can be worn during periods when temperatures range from -5° to +10°.

The temperature range indicates the extreme limits of use. Therefore, the average temperature should be considered as a reference to meet your needs, which vary depending on the sport, weather conditions, and your own thermoregulation.
To increase thermal effectiveness and protection, it is recommended to layer multiple technical garments, following the Biotex philosophy. Check which size fits you based on your shoe size, choose the color, and find out the day you can wear them and train with a technical and high-performance product. The thermal sock is guaranteed by Biotex experience. The garment does not lose its technical qualities over the years or after many washes: it is important to follow some simple rules for garment care.

For over 20 years, Biotex has been producing technical underwear to improve sports performance.

We were the first Italian company to experiment with and use Polypropylene in our products, which ensures breathability, lightness, and constant body thermoregulation for the garments.

We are also partners of professional sports teams with whom we test the effectiveness of our technical clothing in the field to perfect it and make it high-performing for every type of sport.

The Calore sock is extremely soft and lightweight. The water-repellent fibers used do not absorb sweat but expel it even after several hours of use.

WARM is the line designed for when temperatures drop and the use of thermal clothing accessories is essential. Biotex warm accessories are small in size but great in effectiveness: they are not just a complement to the sporty look, they ensure perfect protection and temperature regulation, providing excellent comfort for the wearer. Each Biotex line is characterized by unique elements that distinguish it for warmth, fit, compression, and design, but all aim to improve body performance during aerobic activity.

Take care of your Biotex garments to ensure long-lasting use. It is recommended to wash the garment before use to avoid possible color transfer to other garments. To maintain its characteristics unchanged, a gentle wash inside out at a maximum temperature of 40° and air drying are recommended. Make sure everything is properly closed: zippers, buttons, Velcro. Avoid or reduce the use of fabric softeners (they inhibit breathability). Do not place on radiators or other direct heat sources and do not use an iron. Otherwise, we cannot guarantee the garment's effectiveness. Bright/fluorescent colors may fade.