Fab.com | Custard Messenger Bag by Hester van Eeghen. Designer Hester van Eeghen starts with the classic shape of the messenger bag and upgrades, or rather, uplifts it to create Custard, a convenient (and super cute) carryall. How? By using luscious calfskin leather, a rich contrast of colors, and, as always, by focusing on function as much as she does on style. This beautiful bag features multiple compartments and is large enough to carry a 13-inch laptop.