Most men have owned a shirt that looked fine on the hanger and felt mediocre within an hour of wearing it. Thin fabric that pulls at the buttons, a collar that loses its shape by noon, that particular floppiness that makes even a tuck look sloppy. Twill fixes most of that. The weave gives the fabric real body and a subtle texture that catches light properly, which means it photographs well and wears even better. It sits cleanly over a trouser, takes a jacket without bunching, and handles a full day in a way that plain weave shirts often do not. We have been looking specifically at shirts where the twill weight is substantial enough to mean something, where the collar has enough structure to hold its own without a tie, and where the construction at the seams and placket tells you the maker was paying attention. These are shirts built to last several years, not one season.