DescriptionThis is a set of 4 pieces baby books. It includes 4 different themes: Learning with vehicle, Learning with vegetable, Learning with fruits, Learning with shape and color. Grasping the first or last page of the book, will make "rustle" sound. The third page has a built-in BB device, which pinching and pressuring it, will haveChirpingsound, it is training baby hearing sensitivity.Features- Color: As shown. - Material: Polyester. - Size: 12x11.5x2.7cm. - 4 DIFFERENT THEMES: Learning with vehicle, Learning with vegetable, Learning with fruits, Learning with shape and color. - PAGE DETAIL: Each fabric book has 5 colored pages (including the cover), placing 10 sides inside. - LOUD PAPER DESIGN: Grasping the first or last page of the book, will make "rustle" sound. - BB device inside: The third page has a built-in BB device, which pinching and pressuring it, will haveChirpingsound, it is training baby hearing sensitivity. - FUN PATTERN: Bright colors, fun cartoon, do not fade when washing long.