Keep your little one's smile sparkling with the Brush-Baby Baby Sonic Replacement Heads. Designed specifically for infants aged 18-36 months, these extra-soft bristle heads ensure a gentle yet effective clean for delicate gums and teeth. Each pack contains 4 replacement heads, providing a 3-month supply based on the recommended cleansing brush replacement period. The transparent design adds a touch of modern simplicity to your oral care routine. Ensure optimal oral hygiene for your baby with these high-quality, specially designed replacement heads. Product Summary: Brush-Baby Replacement Heads, Baby Sonic, 18-36 Months, 4 Pack, Extra Soft Bristles, Transparent, Infant Age Group, New Product.