– 2 Hegen slow-flow nipples – The off-center nipple design prevents babies from tilting their heads back while drinking milk, reducing air intake and lowering the risk of milk reflux and ear infections. – The oval-shaped silicone nipple mimics a mother’s breast, simulating breastfeeding. – Smart nipples with built-in anti-colic holes reduce unnecessary air intake, preventing gas and colic. – Prevents milk from foaming and reduces nutrient loss due to oxidation. – Safe for use in sterilizers, bottle warmers, dishwashers, microwaves, boiling water (do not boil for extended periods), and refrigerators. – Made entirely of silicone, containing no added rubber, formaldehyde, or plasticizers. – UV sterilization of any nipples is not recommended, as it may cause them to deform or soften, affecting the bottle seal and leading to leakage. However, this is not a safety concern; the goal is to extend the nipple’s lifespan. – The vent holes inside the nipple may become clogged due to milk buildup, so please be sure to clean them gently with your fingers to ensure proper nipple use. – We recommend using a Hegen double-ended nipple brush to clean Hegen nipples, then sterilizing them with boiling water. It combines the advantages of glass and plastic; BPA-free, lightweight and portable. – PPSU material is naturally amber in color and contains no artificial pigments. – Country of origin: Singapore – 2X Hegen Teat Slow Flow – Off-center nipple design prevents babies from tilting their heads back to drink, reducing air intake, the risk of milk reflux, and the chance of ear infections – Oval-shaped silicone nipple mimics a mother’s breast, simulating breastfeeding – Smart nipple with built-in anti-colic holes reduces unnecessary air intake, preventing bloating and colic – Prevents milk from foaming, reducing the chance of nutrient loss due to oxidation – Safe for use in sterilizers, bottle warmers, dishwashers, microwaves, and in boiling water (do not boil for extended periods) and refrigerators – Made entirely of silicone, free of any added rubber or other formaldehyde or plasticizers – UV sterilization is not recommended for any nipples, as it can cause deformation or softening and prevent proper bottle sealing, leading to leakage. However, this is not a safety concern; the goal is to extend the nipple’s lifespan – The air vents inside the nipple can be affected by milk buildup, so be sure to gently clean them with your fingers to ensure proper nipple use – Hegen nipples are recommended to be cleaned with a Hegen double-ended brush and then sterilized with boiling water – It combines the advantages of glass and plastic; BPA-free and lightweight – PPSU is naturally amber in color and contains no artificial colors – Country of origin: Singapore