Description

• Character-themed rulers: The rulers feature popular Sanrio characters, including Kuromi, My Melody, and others, appealing to fans of these characters. 
• Interactive design: Some rulers appear to have a maze-like game or interactive elements with small balls inside, adding a playful aspect. 
• Material: They are typically made of plastic, making them lightweight and suitable for students. 
• Functionality: They serve as standard rulers for measurement while also offering a decorative and potentially entertaining element.