Over the of 3 is a sensitive period of the psychological development of children, an important period of practical ability and the language development of children, playing with blocks in this sensitive period, can help the baby to exercise ability, more able to develop their intelligence. Features: help baby to recognize shapes, recognize colors, practice classification, improve hand-eye coordination, share the fun with partners, and improve practical ability. The product is bright and soft, protects the eyes of the baby and helps the baby to recognize the color correctly. Name: 4D puzzle straw blocks Material: ABS environmental protection material Applicable : 3 years old and above Length of straw: 20cm Straw color: 5 colors, aver random hair Maintenance method: warm water cleaning, wipe, not high-temperature disinfection Build Your Creativity DIY Colorful Educational Smart City Assembly Sticks by NVJ Enterprise. Toys Kids Children Preschool early Learning Educational Toys Over the of 3 is a sensitive period of the psychological development of children, an important period of practical ability and the language development of children, playing with blocks in this sensitive period, can help the baby to exercise ability, more able to develop their intelligence. | help baby to recognize shapes, recognize colors, practice classification, improve hand-eye coordination, share the fun with partners, and improve practical ability. | The product is bright and soft, protects the eyes of the baby and helps the baby to recognize the color correctly.