Make Your Own Stuffed Animal "Happy the Hippo" - No Sew - Kit With Cute Backpack! 15 inch Plush Hippopotamus Plush Animal Skin, Bag of Fluff Stuffing, Fabric Wishing Heart Insert, Birth Certificate, Super Cute Nylon String Bag Backpack Easy Instructions, No Sewing Required, Self Sealing Closure, Super Soft Feel Fits most 14 - 18 inch stuffed animal clothing and accessories. Closure big enough for sound module insert or record your own sound module.