This is a slotted Valentines heart that can be used to deliver kids valentine cards, gift cards, money, personal notes and more. It can also be reused as a keychain, backpack clip, lanyard, decoration, ornament and more. Because it can be repurposed after opening it reduces waste. This is a fun and reusable way to present your gift or you can even give it with nothing inside. A 1.42 inch metal swivel snap hook and key ring comes attached. The keyring has an outer diameter of .59 inches and the hook has an inner diameter of .39 inches. All the sayings are platonic so this would be great for kids to give out with their valentines cards in the classroom. The kids will love hooking the hearts onto their backpacks after taking the Valentines card out. Options are: Besties, BFF, UR Cool, Class Act, Whiz Kid, and Be My Friend Each heart is about 3.68" wide, 3.375" tall and has a depth of about 3/16" thick. Personally designed and 3D printed from durable PLA plastic.