Muscle fit and athletic cut aren't standardized patterns. A stretch muscle tee can look clean in a mirror and feel too close by lunchtime. A cotton athletic tee may leave more room at the waist...

A sleeve that frames the arm is flattering until the chest develops two diagonal lines pointing toward the armpits. Those lines can tell you more about fit than the sleeve itself. Give the chest enough...

You can spot a straight body in a flat photo by following the side seams from chest to hem. Spotting the sleeve fit takes a second look. A tapered sleeve can end close to the...

Some tees look right at the arms only when the whole shirt is a size too small. If you keep pulling the front away from your stomach, the body is solving the wrong problem. Look...

A thick sleeve can sit neatly around the upper arm or stick out like a small awning. The difference often starts at the opening. Match that opening against a tee you already wear before assuming...

A tuck can fail in opposite directions. A short tail slips out as you reach. A wide tail stays in but piles up around the belt. Pulling the waistband tighter can make both problems more...

Dense cotton makes a side seam easy to see. A taper that's slightly too aggressive can form a shelf at the waist; a body cut too wide can stand forward from it. Start by finding...

Two guys with the same shoulders may want entirely different shirts. One tucks a tee into wool trousers; the other wears it over jeans and wants a clean vertical line. On a V-shaped torso the...

A listing that says athletic fit can mean fitted sleeves, extra stretch or a genuinely narrower lower body. Ask for the shoulder span and sweep. The sweep is the distance across the bottom opening measured...