Polartec

In terms of heat retention, the fabric is on par with wool. At the same time, it is much lighter, dries faster, wicks sweat away from the body without absorbing moisture, and protects against wind, light rain, and snow. Microfiber does not cause allergic reactions. The material is wear-resistant, easy to wash, and quick to dry. It belongs to the next-to-skin category.

The unique properties of the material are achieved through a two-component knit construction based on a blend of synthetic fibers — a strong and elastic outer layer and a soft inner layer with specially woven velour pile.

• The thermal fabric stretches in 4 directions, hugs the body, and provides maximum freedom of movement.
• Excellent heat retention. Microfiber is extremely thin, so there are many more individual fibers per unit area than in regular fabric. This creates numerous air pockets within the fabric that prevent heat loss. These pockets are not sealed, allowing water vapor to escape easily.
• The fiber structure provides high durability; the material is machine washable.
• Keeps the body dry. One-way moisture transfer from the inner velour layer to the outer: sweat is wicked away from the skin through the "contact points" of the inner fabric surface, acting as a wick, and upon reaching the outer surface, it spreads over an area many times larger than the original — drying speed is 2 times faster than cotton.
• Resistant to rain and wind. Microfiber features near-zero hygroscopicity and very low wettability. On the outer surface of the fabric, fibers form a very dense structure that prevents moisture and wind penetration from outside.