The TUO Kinetic Merino 200 Half-Zip Base-Layer Top for Men gives you a high-performance single-jersey base layer with intelligent tech. This 200-gram, TUO base top has an outstanding heat-to-warmth ratio and superior breathability with a half-zip front for temperature regulation in any scenario. The naturally odor-reducing and moisture-wicking properties merino wool pair with the stretch of spandex to make 200 Base Top a perfect option for next-to-skin comfort and performance. Flatlock seams. 95% merino wool/5% spandex. Machine wash. Imported.Manufacturer style #: 9020019. 95% merino wool/5% spandex 200-gram fabric Single-jersey fabric for exceptional breathability Naturally odor-reducing and moisture-wicking Half-zip front for easy layering and temperature regulation Flatlock seams Helps reduce odors; does not guarantee 100% odor elimination