Dynamic temperature variations can be tricky to manage; vests protect your core temperature which is most critical to your well-being. Keeping your chest and back warm helps the body regulate and balance your extremities. The Cerre is designed with shaped seams for a streamlined efficient fit and insulated with high-loft 550 fill power duck down. Strategically-placed baffles keep the certified Allied® down in place, assuring proper fit and performance.