Bring a smile to your Naval Candidate Officer as they graduate from Officer Candidate School and prepare to serve on a submarine with our Candio Box Submarine Theme Sticker Kit. Perfectly designed to fit a USPS large flat rate box, this kit offers a heartfelt decorating idea that enhances the joy of receiving care packages. At Homeport Greetings, LLC, we pride ourselves on delivering personalized, high-quality stationery that helps you celebrate special moments with those who serve.