We pay attention to the healthy growth of your baby, and our baby puzzles will accompany your baby's growth. Every intimate encounter should be safe enough. We use high-quality basswood boards with more than 5mm as the base material, and use high-precision laser cutting technology to process each letter and bottom plate. Each cusp is rounded to avoid harm to the baby. To make the letters brighter, safer and healthier, we use more expensive eco-friendly water-based dyes to color the puzzles. Whether your baby holds the letters in his hand or bites into his mouth, you don't need to worry, just enjoy the happy moment.