CornerStone Long Sleeve Select Tactical Custom Shirts, Echo Steel Diffusers elastic pen loop (pen is color_Patagonia_84030 elastic pen loop (pen is not included) while mesh venting and eyelets provide breathability and ventilation on the warmest days this tactical shirt is packed with pockets and innovative features to keep you looking professional throughout the workday 60 40 polyester cotton ripstop Stain release Reinforced triple needle stitching Hidden button down collar Mic clips at shoulders Double pass through chest pockets with hook and loop closures and pen slot Dyed to match buttons Underarm gussets Pen pocket on left sleeve Cape back with mesh ventilation