Modern Comfort, Old-School Charm. The Oxbow PrimaLoft Vest is our modern take on the classic, old-school utility vest worn by outdoor adventurers and craftspeople for generations. Like all good vests should, it's built to keep your core warm and your arms free so you can do things like split wood with ease.  Exceptionally warm and durable, the vest is constructed with 12-oz. cotton duck canvas, double-needle stitching, flat-felled seams, Danner suede pockets, and pilot twill lining. It's super l Flat Felled Seam, Utility Vest, Charm School, Duck Canvas, Gear Bag, Black Olive, Clothing Essentials, Casual Everyday, Insulation