This three-stage heat transfer magic cube is a single brain teaser puzzle that changes appearance through heat transfer, offering a unique twist on a classic challenge. Each box contains 288 pieces, with the cube measuring 5.7 centimeters, and it comes in a window box for display. Designed for children aged 6 to 12, it provides an engaging activity that tests problem-solving skills and curiosity. This item is sold wholesale by the box. Options: Black, Educational, 5.7 cm.