The versatile Challenger ™ Vest has spandex-trimmed armholes and hem for long-wearing durability. | Teklon® nylon shell 8.3-ounce, 100% polyester fleece body lining Double-needle stitching throughout Slash zippered pockets Port Pocket™ for easy embroidery access Binding at armholes and hem Due to a Tyvek inner lining, a silk screen or heat transfer treatment is not recommended for Goldenrod/True Black.