First developed for the tropical air of Jamaica, it’s Roark’s all around, moisture wicking, mechanical stretch, perforated woven. The “Bless Up’s” Tactel fibers are lighter, softer and stronger than your everyday cotton woven. It also comes with a quick dry finish and soft rubberized buttons. Lightweight Perforated Construction Mechanical Stretch Quick dry & moisture wicking Made with Tactel nylon fibers Soft rubberized buttons Classic short sleeve fit 68% Nylon / 32% Polyester