Dress it up but keep it relaxed. When your body calls out for sweats but the occasion demands finesse, the Marco delivers a flannel look in a durable knit. Both back pockets have security zippers, and you get another in the right front pocket for your credit card. Fresh: The patented SILVADUR™ polymer delivers silver ions to the fabric surface and activates them in the presence of undesirable bacteria, helping eliminate odor and keeping you fresher for the life of the garment. Less laundry: A Teflon™ SHIELD+ finish means you'll get more wear between washes.