BIBS Bottle Nipple is designed with a heart-shaped anti-colic valve, to ensure the best milk flow for your baby combining both function and aesthetics. The nipple has been specially developed to match the nipple from the popular BIBS Colour pacifier which promotes the right sucking technique for successful breastfeeding, to avoid confusion if you are both breastfeeding and supplementing with a bottle. Features: -The nipple is produced from soft natural rubber latex and designed with an anti-colic valve, to ensure the best milk flow for your baby -Nipples are available with both slow and medium flow – suitable for both milk and water -100% free from BPA, PVC, and phthalates -Made in 100% food-grade material with the highest respect for safety and recyclability -We recommend replacing the nipple every 4-6 weeks for both safety and hygienic reasons -Specially developed to meet European standard EN14350 -Carefully designed and manufactured in Denmark