The story
In 1973, Swede Anders Bengtsson started developing a base layer material that transports moisture (sweat) away from the skin. Bengtsson tested his designs by weighing his gear after exercise sessions. He used polyester fibers, which only absorb a minimum amount of moisture, and worked them into a weaving construction. The resulting capillary action further promotes moisture expulsion transporting sweat from the skin to the outer surface of the garment where it quickly evaporates. The brand Craft of Sweden was officially founded in 1977. In addition to technical baselayers, the company soon started producing second layer garments (focused on fleece material) and outerwear.
From Wikipedia’s article on Craft Sportswear, shared under CC BY-SA 4.0.4