With the intense pace of work and life, we do need more relaxation — solving a puzzle ball cube is a good and healthy choice. Coolzon 2 pack rainbow puzzle ball, one standard white and one luminous blue, which are eco-friendly and durable, can be your fun source anywhere anytime. How to Play: 1. Randomly move one ball to the empty hole. 2. Mix up other balls to holes in different colour. 3. Move balls to match ball color with hole colorifications: Type: Magic Rainbow Ball Material: ABS Plastic Size: 7.0cm in DiameterKindly Reminder: Not suitable for children under 3 years old. Avoiding to put any parts into mouth or choke on. Don’t dismantle cube by force.”