How to use: First, open the dino skulls to find the bones inside. Then, follow the assembly instructions you unlock by scanning the QR code on the manual with your device. After assembling the skeletons, you can use the clip to attach the skull to your keychain or belt loop. Note: Keep the product away from small children who might swallow the small bones. When not in use, store the set in a dry place to prevent damage. If the glow - in - the - dark feature fades, expose the skeletons to bright light for a while to recharge them.