Everyone needs a year-round, go-to layer that’s just right. From dawn patrol uphill ski sessions to fast hiking in the shoulder-season, the ultralight synthetic Crystal Jacket is engineered to keep you dry and warm during highly aerobic activities where moisture control is essential. This ultralight insulated vest is designed to regulate your core temperature and move moisture for performance without compromise by using extremely breathable 4-way stretch fabrics that wear close to the body, providing maximum comfort and thermal efficiency in a wide range of conditions.