How to choose merino wool thermal underwear for autumn?

Merino wool underwear provides thermal comfort even when wet due to its ability to absorb moisture and release heat during absorption. The fibers are fine, reducing irritation on the skin, making it suitable for sensitive individuals. Merino also minimizes odor, allowing for less frequent washing. The fabric weight affects thermal properties, with lighter weights suitable for dynamic activities and heavier weights for colder conditions. The brand emphasizes sustainability, using certified wool and environmentally friendly production methods. Proper care involves airing out garments and gentle washing to maintain their quality.