These short-sleeve shirts are 6oz. 100% pre-shrunk cotton. Ash grey is 99% pre-shrunk cotton and 1% polyester. They have a seamless double-needle 7/8" collar, tapered neck and shoulders and with double-needle sleeve and bottom hems. The Currituck Beach Light House is a first order lighthouse meaning it has the largest of the 7 Fresnel lenses and can be seen as far away as 18 nautical miles. The 162 foot high structure was completed in 1875. It contains approximately a million unpainted bricks and is the last major lighthouse constructed on the Outer Banks. This is an iconic symbol of Corolla that we are proud to have as part of our logo. We have had this design since 2009.