I'm a thin person - 195 cm (6'4") and 70 kg (155 lbs) - and this shirt is it too big for me that i will look stupid wearing this in public no stretchy materials needed if wearing a shirt is like dressing gown 'Slim' in an item's description will be best interpreted as "slim, fitting for an average, slightly obese (American?) male” rather than "fitting for a slender person.” The extremely large size of the shirt I purchased makes me think that even the smallest size available would not suit me will fit. I will be returning this shirt immediately and looking at different brands. (The material feels very light, smooth and stretchy as one would hope for. I was very excited for the shirt until i I put it on and buttoned it up.)