The fabric is very comfortable and easy to care for, 4-way stretch allows full freedom of movement and is almost wrinkle-free. Judging by the size grid I was on the border between small and medium, so I ordered two medium and one small. While the small size could be worn, the tight "muscular shirt" that would have been good at the gym wasn't the look I wanted so I returned it and ordered an additional medium size. Good color choice.