It was designed for men, but has been popularly accepted as unisex.

Cultural Note
In Greek mythology, a little owl traditionally represents or accompanies Athena, the virgin goddess of wisdom, or Minerva, her syncretic incarnation in Roman mythology. Because of such association, the bird—often referred to as the "Owl of Athena" or the "Owl of Minerva"—has been used as a symbol of knowledge, wisdom, perspicacity and erudition throughout the Western world.

What does the AOE mean on the design?
Buried amongst the rubble of the Athenian Parthenon, an owl was found, with the inscription beside it the letters “AOE” (alpha, theta, epsilon) meaning “Of the Athenians” in ancient Greek."