“I am 5'10 with longer than average arms and weigh about 160lbs. This fit great with some room in the sleeve length and in the body length and width. I could have probably gotten away with a small, but my shoulders are wide, so the medium is perfect for my broader shoulders. I love the quality of this blouse and look forward to American Tall carrying more "office wear" choices like suits and blazers and button-down shirts and bouses.”