This lightweight insulator is built to keep you warm and mobile, making it perfect for high-paced hiking or skiing in unpredictable, cold weather. Featuring Lifaloft™ insulation, it delivers superior warmth and loft without added weight and while retaining its warming value when wet. The stretch panels ensure unrestricted movement, allowing you to take on technical climbs or descents with ease. Designed in collaboration with outdoor and ski professionals, it’s a versatile layer you can rely on both on and off the mountain.