In celebration of this year’s Boston Marathon, New Balance has teamed up with Boston’s own Concepts to craft the “Northern Lights” pack. Featuring blue, green and burgundy editions of the American-made 574, the pack sees the silhouette with suede and mesh uppers, contrasting black and white accents, and glow-in-the-dark hits to the branding, outsole and laces. The collaborative “Northern Lights” pack will be available exclusively from Concepts beginning this Saturday, April 13.