I use these shirts for casual wear. I've been wearing Port Authority shirts for years. They are well made and last. The long sleeve pique polos reflect the craftsmanship and details of more expensive shirts. Im 5'9" tall, weigh 155 lbs and medium fits as it should. What I don't like is that the shirts are lightweight at 6.2 ounces. I would be happy to pay a little more for a 6.8 ounce shirt that would be more seasonally suitable. The shirts are not so thin that I returned them, but almost.