Warmth starts from the base. At Zhik we are proud to say, that our baselayers stand out from the pack. Superthermal(TM) HydrobaseA(R) provides amazing moisture wicking properties that carry sweat away from the body fast to keep you dry, perfect for high activity sports.Superthermal(TM) HydrobaseA(R) is our proprietary base layer composite that combines polypropylene and polyester fibres to create a lightweight, warm and highly moisture wicking material. The fabric construction has been engineered to regulate body temperature by transferring moisture away from the skin during periods of high activity while also providing excellent thermal insulation in extremely cold conditions.HOW IT WORKS:The hydrophilic polyester and hydrophobic polypropylene fibres work together to suck moisture away from the skin to the outside of the garment. Moisture is wicked across the outer hydrophilic polyester fibres allowing it to evaporate easily while the inner hydrophobic polypropylene fibres keep the skin dry even after extended periods of high-sweat activity.