Advanced infrared material technology The Zebru is inspired by a mountain in the Central Eastern Alps, Monte Zebrù (3735 m). It is made in Italy and the main component of its material is fine merino wool, which provides optimal thermal performance and moisture wicking, and feels comfortable against the skin. We have also complemented the merino wool-polyfibre blend with the special Responsive polyamide yarns, which contain a unique blend of natural thermoreactive minerals. Responsive absorbs the body's far infrared radiation (FIR) and gradually releases it back into the muscle tissue. This improves thermoregulation and thus your well-being during activity. It also stimulates blood flow, cellular performance and oxygenation, so you stay warmer longer, perform better and recover faster. Responsive technology is a permanent fabric component and will not wash out. The Zebru is super soft, sporty cut and has a body mapping design. The polyamide yarns make the T-shirt extra durable and ensure it retains its close-fitting shape. Thanks to our advanced circular knitting process, the entire upper body is made from one piece - for more comfort without rubbing seams. Merino wool also naturally counteracts odour build-up. A moisture-wicking technical T-shirt with merino wool for better temperature regulation in a wide range of conditions.