Naturally sustainable glass: The bottle is made from durable, medical-grade glass, making it long-lasting, stain-resistant, and free from harmful substances like BPA, phthalates, and toxins. Breast-like shape feel: The teat is designed to mimic the shape and feel of a mother's breast, helping to prevent nipple confusion and facilitating easy switching between bottle and breastfeeding. Anti-colic valve: The teat features an anti-colic valve, which helps reduce symptoms of colic by preventing excessive air from entering your baby's milk during feeding. Soft silicone teat: Made from soft silicone, the teat flexes and stretches similar to a mother's breast, allowing your baby to feed comfortably at their own pace. Highly recommended: According to surveys, this bottle is highly recommended by parents, with a high percentage of parents indicating they would recommend it to others. Overall, the bottle aims to provide a natural feeding experience for your baby while minimizing discomfort and reducing the risk of colic. Additionally, its sustainability and safety features offer peace of mind for parents. (description exceeds maximum possible length)