Salewa Woman's Shirt Cristallo Warm Alpine Merino is the perfect shirt for high-intensity alpine mountaineering in cold-weather conditions. Named after Monte Cristallo in the Dolomites, northeast of Cortina, the Cristallo gives you wicking warmth and next-to-skin comfort for active use. Its hybrid merino wool/polyamide fabric moves moisture quickly away from your body, helps prevent odor and dries fast. This makes it the ideal winter baselayer for high-octane activities. is based on a hybrid composition Alpine Merino Responsive fabric, which is made of 78% merino wool and 22% polyamide. The wool is spun around the nylon core to make the fabric stronger and more durable. In addition, its synthetic fibres are enhanced with the proprietary Responsive technology that is based on a special blend of natural thermo-reactive minerals. Responsive recycles far-infrared (FIR) energy from your body, then slowly releases it back over time. This helps to give you greater endurance, and stamina and means you recover faster and stay warmer for longer. These benefits last for the life of the fabric as Responsive is an integral part of the