The M-Tac Hexagon underwear will ensure quick sweat evaporation and will keep your skin perfectly dry during sports or other active activities. The material stretches perfectly. The material of manufacture is Coolmax® fabric, which, unlike conventional fabrics, does not absorb moisture, but passes it through itself, allowing it to evaporate. This allows you to achieve the required cooling mode. As a result, the fabric remains light and stretchable, while the skin remains dry and warm.Breathability, hygroscopicity, hypoallergenity of this fabric, its softness and lightness are ideal for everyday wear and, in particular, for people with an active lifestyle.The fabric dries much faster than cotton, wool, nylon, acrylic, and others. Does not absorb odors. Composition:62% Polyester30% Nylon8% SpandexCoolmax:Moisture-wicking fiber developed by DuPont. The fiber is made of polyester, the cross-section is non-round, but consists of four channels. As a result, Coolmax fiber has increased surface area by an estimated 20% (over round fibers) to produce a wicking effect via capillary action. This unique structure removes moisture from the body much faster and transfers it directly to the outer surface of the garment, where it evaporates immediately.