Functional underwear as the most important layer in the clothing system
Functional underwear is the most important layer in a clothing system when working in changing temperatures, cold conditions, or under physical strain. It sits directly against the skin, regulates moisture, reduces sweat, and supports a balanced body climate. High-quality functional underwear ensures that the body remains dry and employees stay efficient even on long days. Whether in trade, industry, logistics, or during athletic activities – functional underwear forms the basis for comfortable work and protects against both cooling down and overheating.

Materials and comfort
Modern functional underwear is made of specially developed materials such as COOLMAX® or merino wool, which quickly wick moisture away from the skin. This effectively regulates sweat and supports a comfortable wearing experience. At the same time, the materials ensure good ventilation and help to keep body temperature stable even in low outside temperatures. Functional underwear is elastic, tailored close to the body, and does not restrict freedom of movement – ideal for intensive outdoor work as well as for sports activities.
Product range and matching accessories
Our range includes functional undershirts and functional underpants in various fits for men, as well as matching accessories such as knit caps. This allows equipment to be individually tailored to the requirements of different areas of application. Commercial buyers and companies can conveniently purchase functional underwear from us online and specifically put together the equipment for their employees.

Areas of application for companies
FAQ: Frequently Asked Questions about S1 Functional Underwear
What is the difference between functional underwear and conventional underwear?
What is the difference between functional underwear and conventional underwear?
Functional underwear consists of specially developed materials that actively wick moisture away from the skin and support a balanced body climate. Conventional underwear generally does not offer this moisture regulation.
What does COOLMAX® mean when it comes to functional underwear?
What does COOLMAX® mean when it comes to functional underwear?
COOLMAX® is a material technology that wicks moisture away from the skin particularly effectively and ensures a dry, comfortable feel – even during physical exertion or changing temperatures. Merino wool is also a suitable natural alternative, which also has moisture-regulating and temperature-balancing properties.
Which functional underwear is suitable for physical work?
Which functional underwear is suitable for physical work?
For physical work, functional underwear with high moisture regulation, good ventilation, an elastic and close-fitting cut, as well as insulating material properties is suitable. This keeps the body dry and mobile even during intense exertion and changing temperatures – whether in manual trades or in sports.
What is the best way to wash functional underwear?
What is the best way to wash functional underwear?
To maintain functional properties such as moisture regulation and elasticity over the long term, we recommend gentle washing according to the care instructions on the label, typically at low temperatures and without fabric softener.
Is functional underwear also suitable for use in warmer months?
Is functional underwear also suitable for use in warmer months?
Yes, thanks to the moisture-regulating material properties, functional underwear keeps the body pleasantly dry not only in winter when it's cold, but also in summer at higher temperatures and during physical exertion.

