Harriton Men's Short Sleeve Barbados Textured Button Down Camp Shirt M560 black XX-Large;  I have a number of these shirts and I love them all.  Comfortable, loose, and breaths... not for cold weather, lol.  This particular shirt is nice , but not so nice to be overdoing it, to wear too the office on a casual Friday while still coming across as a professional.  Cost vs quality makes this a great shirt