Our Blue Marlin Performance. Is a 5 ounce material comprised of Nylon/Spandex delivering an incomparable performance. Yes, Nylon! What else is made from nylon? I'm sure you heard of nylon rope. Nylon is one of the strongest material that can be produced to make apparel so you know this shirt will last. The fabric is cool and breathable while providing a UPF 30 sun protection rating combined with Duro-Tec material that wicks moisture away keeping you dry and relaxed while enjoying your favorite aquatic luxury. Side vented camo for that extra coolness, literally. Carpe Diem Fishing Marlin logo located on left chest with our parent logo stretched across the middle back.