Custom Port Authority Short Sleeve Twill Shirt S500T Classic Navy River Island Navy Blue Short Sleeve Stretch Cotton Shirt in Blue for Port Authority Mens Classic Navy Short Sleeve Twill Shirt Twill shirt Navy Herringbone Linen Short Sleeve Shirt Eton. The Porter Shirt is a short sleeve button down made with Aero Tech seersuckerlightweight, breathable, and engineered to stay cool in the heat. With wicking performance and stretch, its built for warm weather wear. Button down collar Aero Tech cooling technology Shirttail hem Branded woven label at underplacket 2 way stretch Moisture wicking Machine wash cold with like colors Do not bleach Tumble dry low Cool iron if needed Fabric Content: 86% Recycled Polyester,14% Spandex