Custom Corrugated Mailer Box with Double-Sided Grey Card and Silver Foil This custom corrugated mailer box features a strong corrugated paper structure laminated with grey card on both sides, combined with silver foil stamping to create a premium and durable packaging solution for apparel, gifts, retail products, and subscription packaging. The double-sided grey card lamination improves the surface quality and overall rigidity of the mailer box, while the silver foil stamping