Warm meets cool. The true white has sharp and deliberate; the space black counters with black's more interesting sibling. The contrast is the point. The collar holds its shape all day without that wilted-polo look. You packed one pair of pants for the whole trip. Bold move. Correct move. Two pieces, one carry-on, and you just solved packing for the whole trip.

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