Features: 1. Unique Function - This cube can improve children's spatial awareness and strengthen children's memory. You can try to expand your brain capacity. Exercise the brain, improve memory and hand dexterity. 2. For all ages - Twist and rotate the sides of the cube so that each of the six faces has only one color. Release people's life and work pressure. 3. Safe material - Green design, safe and reliable, ABS material, non-toxic and harmless, completely safe for human health. 4. Skill development - The compact design and smooth feel can improve your memory and hand flexibility, stimulate your imagination and creativity, and are suitable for testing your mental skills and challenging your patience. It can even prevent dementia. 5. Perfect gift - Classic cube challenges your thinking and problem-solving skills. No matter where you are, you can spend leisure time with your loved ones. The ultimate Christmas/birthday gift for children, friends and family. Specification: Cube chemical element periodic table third order cube learning formula. Every time you pick up the cube, you enter the magical world. This classic puzzle game will never go out of style. Christmas gifts/Birthday gifts for children, friends and family. Specification: Color: black, white Material: ABS Package list: 1*Cube Note: Due to the different monitor and light effect, the actual color may be slightly different from the picture color. Please allow 1-2 cm differences due to manual measurement.