1. Three-dimensional double-decker bus design, combining stationery storage and small toys, making it more appealing to children. 2. Two independent compartments for storage: the upper compartment holds pencils and rulers, while the lower compartment stores erasers, correction tape, and small accessories, keeping stationery organized and tidy. 3. Drop-resistant, pressure-resistant, and not easily deformed; all corners are rounded and polished to remove burrs. 4. Durable and long-lasting, suitable for daily school use. 5. Moderately sized, fits perfectly in a school bag, lightweight and portable.