10 pcs flat snap together type hinged hearts. You can put small pictures or other things inside, like locket of hair, sand from favorite beach, small pressed flowers, coins, stamps, dog tags etc. Make Christmas ornaments, necklaces etc These are New old stock, not sure of age, could be 1970s,80s, 90s, ? we do not know. Being bulk packed and having been moved around most have minor scuffs etc. Each has easy to open latch tabs as well as a small hole you can snap over a bead chain or string with knot on end. (You may want to glue shut if you put sand etc in them) Width across ad widest is just over 2" (47mm) Top to bottom is about 1.75" (45mm) outer width is .29" (7.5mm) Inner width, where you can put things .19" (5mm) for reference that is about 3 coins (US Quarter) deep. Each is marked SMD Promotions ( A google search indicated it may be related to Beanie Baby accessories??? but the company also made other products) QTY1=10 hearts QTY2=20 hearts etc. Being bulk packed and having been moved around most have minor scuffs etc.