The best commuter kit hides its functionality behind nice design.
Case in point: the Radavist Coldblack Shirt. Designed by John Watson, who runs theradavist.com, in collaboration with Parker Dusseau, the button-down fits right in at any San Francisco or New York office, but it's also packed with features that make it ideal for bikes, too. Mesh panels along the back add breathability and articulation for when you hit the drops, while the black cotton uses Schoeller's Coldblack technology to reflect the sun.
Parker Dusseau's website is currently sold out of the top, but you might be able to score your own from one of the listed retailers.