Thyseed Glass Natural Anti-Colic Baby Bottles offer safe, gentle feeding for newborns from birth to one month old. This 4-pack includes 5-ounce bottles designed with anti-colic technology to reduce discomfort and gas. Made from high-quality glass, these bottles are free from harmful chemicals like BPA and phthalates, ensuring your baby gets pure feeding every time. The included natural-feel nipples mimic breastfeeding, making transition easier for nursing mothers. Glass construction is durable, heat-resistant, and easy to clean, withstanding frequent sterilization without degradation. The wide-neck design simplifies filling and cleaning, while the anti-colic venting system helps minimize air intake during feeding. Perfect for parents seeking a reliable, chemical-free option, these bottles grow with your baby as feeding needs change. Ideal for newborns and early infants, this starter set provides everything needed for confident, comfortable feeding. Invest in your baby's health with bottles designed for safety, comfort, and peace of mind.