Robust and cooling: The 150 COOL BRAND T-SHIRT for men combines two natural fibers with the perfect properties for summer tours. What makes the innovative 150 MERINO COOL material so special? Comfortably soft merino wool regulates temperature and moisture, while the smooth surface of sustainably produced TENCEL™ lyocell cellulose fibers ensures great evaporative coolness when things get hot. The two renewable raw materials are combined using BETASPUN technology. This involves spinning polyamide filaments generously around a core of merino wool and Tencel™ lyocell, making the fabric especially robust as well as tear- and scuff-resistant. Inspired by nature, developed for mountain sports.