Rubik's Phantom 3x3. At first the cube looks impossible to solve as it is completely black, but when you pick it up, colors will appear and you will be able to turn it correctly. The cube are heat sensitive and you reveal the colors with your touch. Challenging and fun!Original product from Rubik's of the highest quality.Dimensions: approx. 5.7x5.7x5.7 cm.For ages 8+Not suitable for children under 3 years of age.