Temperature contrast is doing the work here. The true white (cool) against deep blue (cool) creates visual tension that reads as intentional rather than random. The collar holds its shape all day without that wilted-polo look. You're in the window seat, bag overhead, coffee in hand, and nothing's pinching or riding up. You packed light and still look like you packed smart. That's the whole trick.

Finish with white minimalist sneakers and a dark nylon carry-on that fits overhead.