Full running gusseted construction under the arm 2 welted cord ports on back panel and 1 laser cut cord port on inside of left document pocket Wicking mesh fabric on inside yoke with 3 vent ports for breathability The V2 Shirts represent years of research, development, and user input to provide a best in class, performance driven shirt to handle any situation. Inset pockets with reinforced flaps provide a neat, clean, and professional look Gusseted construction under the arm provides maximum flexibility when in motion Mechanical stretch provides the ultimate in comfort, professionalism, and durability First, the fabric is dyed at the fiber stage to ensure that color is ingrained at the beginning of the process. Second, it is dyed after the fibers have been woven into fabric for extended color protection up to 50 washestable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }