This is classed as a relaxed fit, although it has some elastane in the material for a bit of stretch and extra comfort. The author from MI is a medium in standard clothing and a medium is a loose fit, small more fitted. The Carhartt Rugged Professional Work Shirt with long sleeves is a durable shirt made of sturdy blended fabric. The upper is elastic and has the Rugged Flex technology, which makes it very nice to walk with. In addition, it is very dirt-repellent and does not warp due to the tight weaving. The shirt has a button-down collar and a front button. The patch breast pockets can also be closed by buttons, also has the left breast pocket an extra compartment with zipper.