Built for rapid ascents, the Ortovox Men's Piz Boe Light Tec Insulated Jacket utilizes two different blends of wool, strategically placed, to maximize warmth, breathability, and flexibility for backcountry skiers who move quick. Wear this lightweight insulating layer on its own during cold and clear ascents, and then layer it under a shell when the weather turns foul. A blend of Swiss wool and corn based polyactide insulation are placed throughout the body for warmth, superior temperature regulation, and efficient moisture transportation. Then, Merino Naturetec Light insulation is used at the underarms for increased stretch for better mobility during technical ascents and skiing. The finished product is a high performing, insulating jacket that you can get your heart rate up in without worrying about getting drenched with sweat.