The newly designed 150 Merino cool shirts and tops are now stronger and more robust – without sacrificing the cooling Effect of tenceltm. Beta-spun technology from the südwolle group refers to a new spinning process In which a generous number of fine polyamide filaments are spun around a core of merino wool and Tenceltm. The material is more scuff and tear resistant thanks to the protective polyamide outer Layer, while maintaining the benefits of natural merino and tenceltm fibers. With this line you’re perfectly Equipped, for either alpine tours or long alpine climbs.