The new men's PRIMA PRO model is made of high-quality materials containing Primaloft Silver Performance fiber and Merino sheep's wool. Primaloft Silver Performance is a unique yarn consisting of fine polyester fibers, which are characterized by excellent thermal insulation properties ensuring heat and comfort in various activities. Merino wool is one of the most prized types of sheep wool in the world. Its fibers are thin, pleasant and extremely fine. Due to their natural properties, Merino fibers have excellent thermal properties, hydrophobicity, low weight and high flexibility. The combination of Primaloft fibers with high-quality Merino fibers from sheep's wool guarantees perfect thermoregulation, fast drying and high breathability. In addition, the material has a high anti-allergic and antibacterial effect is gentle and does not irritate the skin. The new model of the men's PRIMUS PRO thermal underwear provides excellent flexibility and comfort also thanks to its seamless design. There is no lack of excellent thermoregulation even in very cold weather. It can be used as an additional layer or as a separate clothing for various activities. Level 5 - Extra warm underwear - provides the highest thermal comfort. @technology@ Package includes: 1 x men's top long sleeve 1 x men's pants long