Sand stone is a warm, sandy neutral, so the cool blue-grey of bering sea gives it somewhere to go instead of blending into the same note. The tee's a lightweight travel knit that resists creasing, so it survives a bag and a long sit. Picture a morning flight, boarding pass on your phone, coffee you're guarding with your life. Warm bottom, cool top, and that's one fewer decision at a gate.
Finish with tan leather sneakers, a woven belt in a matching sand, and a low-profile cap.