Use it alone on a hot day or as a moisture wicking base layer, and you'll thank yourself for getting this lightweight, functional, form fitting shirt. The sleeve design ensures an unobstructed path for bowstrings, and the mesh underarm panels and chest pockets give you plenty of ventilation options. Treated with anti-odor Polygiene®. 4.7 ounces, 100% nylon. Available in Subalpine camo.