Using these magic baby bottles is super easy. Just flip them over to see them empty and stand them up to watch them fill again. This is great for imaginative playtime. When using the bottles, make sure to handle them gently to avoid any damage. After play, you can simply wipe them clean with a soft, damp cloth. Keep them in a dry place when not in use. These bottles are suitable for kids aged 3 and above, so always supervise younger children during play to ensure safety.