Developed for the humid tropical or dry desert air, the Bless Up is 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 providing a long lasting yet light & airy experience. This shirt is literally Technically, Cool. Lightweight Perforated Construction Mechanical Stretch Quick Dry & Moisture Wicking