Poplin looks simple and that is exactly why it exposes bad construction so quickly. A weak collar that curls by lunchtime, a chest that balloons when you sit down, a back yoke that pulls across the shoulders after one wash. These are not minor issues. They are the difference between a shirt that works and one that spends its life being ironed back into shape before going straight back to disappointing you. We have been specifically looking at poplin shirts that resist all of that. The weave in a good poplin has a slight sheen and a crispness that nothing else quite matches, which makes it the right choice for everything from a business meeting to a smart summer occasion. But that only holds if the construction is there to back it up. The shirts we have picked here have proper collar interlinings, accurate sizing, and fabric that recovers well after washing. Poplin at its best is one of the sharpest things you can put on.