4.5 oz/yd2 / 155 gsm, 55% cotton, 45% polyester twill ; Industrial Laundry Tested to 50 washes; Wrinkle-resistant finish; Stain release performance; Structured collar stand with integrated collar stays; Dyed-to-match pearl buttons; Double chest pockets with button closures and pen slot; Side vents; Carbon neutral style in partnership with Green Story third party verified carbon offset program.? For more information click on carbon neutral link above MSRP.