The Choice of 2 Million Parents! A Beloved Collection of Korea's Favorite Tulip Sound Books The 'Tulip Sound Book' series is a sensory-stimulating sound book designed for babies who are especially responsive to sound, making it a must-have parenting item and the #1 most-wanted nursery rhyme sound book among moms. Among the beloved Tulip Sound Book series trusted by 2 million parents, the Haneul Set brings together three wonderful titles in one collection: 'Baby Nursery Rhyme World,' filled with songs every precious baby should hear; 'Smart Baby Nursery Rhymes,' which supports cognitive development; and 'Pretty Baby Nursery Rhymes,' which teaches good daily habits. The sound books included in the Tulip Sound Book Haneul Set are the upgraded 2022 version, featuring an auto-reverse function in every book so the nursery rhymes play continuously without interruption. This set also comes with a bonus silicone cover, perfect for babies in the teething stage, allowing for safer and more hygienic enjoyment of the Tulip Sound Books. With the 'Tulip Sound Book Haneul Set,' you can easily share delightful nursery rhymes with your precious baby anytime, anywhere. Join the wonderful world of joyful, happy parenting today!