Performance Tech Long Sleeve is the ultimate all-round underwear. It is made of a blend of wool, polyester and Tencel. This construction offers the advantages of wool, which is naturally antibacterial and highly effective in terms of thermoregulation, polyester for lightness and quick drying, and Tencel for a cleaner design from an ecological point of view, but also softer to the touch. Tech LS performance can therefore be suitable for many types of use in average winter temperatures. It features mesh panels for efficient and fast moisture wicking during exercise. It can be used for cross-country skiing as well as for running or ski touring. A very nice mix of materials for a hyper-versatile underwear with good insulation and ventilation qualities, all with an ecological eye on the technical textile dear to the Norwegian brand.   Technical characteristics :   Materials : Wool - Polyester - Tencel Mesh panels Flat seams Regular Fit Bjorn Daehlie Size Chart MenSizeHeightChestSleeve LengthWaistHipInner LegS170 - 176 cm91 - 97 cm64 - 66 cm79 - 85 cm91 - 97 cm80 - 82 cmM176 - 180 cm97 - 103 cm66 - 67.5 cm85 - 91 cm97 - 103 cm82 - 84 cmL180 - 185 cm103 - 109 cm67.5 - 69 cm91 - 97 cm103 - 109 cm84 - 86.5 cmXL185 - 191 cm109 - 115 cm69 - 71 cm97 - 103 cm109 - 115 cm86.6 - 89.5 cm Nordic thermal underwear Bjorn Daehlie ---Performance-Tech LS Navy