These shirts are and are a 65/35 poly/cotton pique. They are our favorite shirt.
This classic polo is made by Port Authority. Each will come with the Fort Worth Aviation Museum or BroncoFest X "50th Anniversary" logo (in gray or green) on the left chest. Other options will let you put name or callsign on the right sleeve or add a pocket at an extra cost.
With superior wrinkle and shrink resistance, it's a first-rate choice.