The latest retro spec, to come from Derek Cardigan, is this 7013 “Dark Fade,” in a gradient translucent acetate. Always calling upon clever references, the 7013 is still another example of Cardigans breezy attitude towards fashion. As always, the nerd chic style, features Cardigan’s standard mathematical symbols at the horns and temples. Completed with spring hinges, the narrow vintage “Dark Fade” is the back to school authenticity you’re aching for. Available here.