Our Ballast Jacket and Vest are purpose built insulation pieces that are engineered to keep you warm when wet. Primaloft Black insulation offers best in class warmth. A rugged exterior shell fabric offers professional grade abrasion resistance, while the internal lining offers comfort. The Ballast is equally at home in the boat yard as it is in the bar. 100% Nylon oxford full dull 400D with coating and Durable Water Resistant (DWR) finish.