1, Bright colors help develop baby's color cognitive ability. 2, The annular design makes the baby to develop motor skills when grasping. 3, Ring sounds will expand babiesensory experiences.< 4, These rattles has bright colors and ring sound will keep your baby's attention longer. 5. Wood baby rattles are Packed full of educational activities for baby to enjoy. Perfect for infants to toddlers. Specification Type: Rattle Material: Wood Color: Multicolor Size: Inline Rattle (LxW): 11.5 x 5 cm / 4.53 x 1.97 inch Petals Rattle (DxH): 8 x 7 cm / 3.15 x 2.76 inch Round Rattle Diameter: 7cm / 2.76inch Semicircle Rattle Diameter: 10.5cm / 4.13inch Note: Choking Hazard - Small parts not for children under 3 years old. Play under the guardianship of adults. Package Includes: 4 x Wood Teether