I wear a US 10/12 top and the Medium in this style was tight in the shoulder / chest area despite their size chart.
Also, It will shrink about half a size in the wash so if you are in between sizes, size up.
But I love the cut and shape of this top so I reordered it in the black and also in the gray, this time in large.

Very flattering on my athletic build.  I'm 5'4, broad shouldered, 145lb.

Note:  This is best for fall / winter wear.
The material is thick and too warm for summer or warm spring days.
The listing says its 100% cotton.  I couldn't find a label on the shirt to confirm but it probably is cotton or cotton blend.

Theres no stretch to it and doesnt look like it will pill easily so thats good.

Its great for lots of occasions.  Work, office, casual, going out, errands.
Pairs easily with many shoes / sneakers / sandals.

Im always looking for versatile, easy to wear, timeless styles to add to my wardrobe.
I am very pleased with this shirt!