Salewa Zebru Responsive Zip Longsleeve

Baselayers are essential for high-intensity activities in cold weather. The Zebru Half Zip Tee is a high-performance baselayer made from super-fine merino wool (64%) for optimal warmth, temperature regulation, and next-to-skin comfort. It utilizes thermal body mapping and our proprietary Responsive technology to help you regulate your body temperature.

Named after Monte Zebrù (3,735 m) in the Ortler Alps on the border with South Tyrol and made in Italy, this functional underwear is primarily composed of merino/polyfiber blended with responsive polyamide yarns enriched with a unique mix of natural thermoreactive minerals. Responsive is a smart fabric that harnesses infrared energy by absorbing the far infrared radiation (FIR) emitted by the body and gradually releasing it back to the muscle tissue. Research shows that it enhances blood circulation, improves cellular performance, and promotes oxygen supply, allowing you to perform better and recover faster. Additionally, Responsive is an integral part of the fiber—it remains effective for the entire lifespan of the garment and cannot be washed out.

The Zebru features a close-fitting, athletic performance cut, and the half zipper allows you to quickly trap or release heat. The advanced tubular knitting process creates a seamless, one-piece knitted torso, providing more comfort without friction. Merino wool is also odor-resistant and requires less frequent washing. A thermoregulating merino baselayer for multi-day and intense alpine activities in changing conditions.