Take pretend play to the next level with the Poof-Slinky Fingerprint Kit/Secret Messages combo pack. The awesome Fingerprint Kit includes dusting powder, dusting feathers, tape squares and more so you can use the same methods employed by the police to gather fingerprints all around the house. Keep the evidence from falling into the wrong hands with the Secret Messages set, which comes with invisible ink markers and decoder kits so you can exchange private codes with your friends, learning about cryptography and ciphers in the process. A terrific toy that"s both fun and educational! Ages 8 and up.