Salewa Woman's Pants 3/4 Cristallo Warm Alpine Merino is the perfect base layer tights for high-intensity mountaineering in colder conditions. It is the ideal warm, winter base-layer fabric. Its hybrid merino wool/ polyamide blend rapidly transports moisture away from the body and dries quickly. It is further enhanced with synthetic fibers with the proprietary Responsive technology – a special mix of natural thermos-reactive minerals that recycles natural far-infrared (FIR) energy, helping you to perform better, recover faster and stay warmer for longer. And as Responsive is an integral part of the fabric yarn, these benefits will never wash out or break down.