The Billy’s x ASC GEL-NYC “Pure Silver/Midnight” is a limited-edition collaboration between Tokyo boutique Billy’s Ent. (celebrating its 10th anniversary) and ASC. The design fuses retro running heritage with urban styling: metallic silver overlays explode off a grey mesh and synthetic-leather upper, anchored by navy blue accents—Billy’s signature shade—on branding, form-stripe, and detailing.