Every superhero needs a sidekick, and yours is your brother! Perfect for an older sister to send to her little sibling on National Brother's Day, this card features two caped crusaders flying high in the sky together, a reminder that no matter how old you both get, you'll stick together through it all. It's a chance to remind him to stay as awesome as he is, and that you'll make sure there's always a place for him next to you, whether you're close by or many miles apart.