Tommee Tippee Closer To Nature Thick Feed Teats For 6 Months+ Babies gives natural feel just like mum feeding. This easy latch teat is for smooth transition between breast and bottle. It features optimum venting valve with slow flow teat for less air intake and less discomfort for the baby. It is made using super soft silicone and designed to mimic the natural flex, stretch and movement of mum’s breast. They’re also easy to clean and always BPA-free. It is compatible with all Closer to Nature easy-vent bottles. The special valve allows for better airflow so your baby doesn't accidentally gulp down a bunch of air and get uncomfortable gas pains. It is easy to clean either in a sterilizer, by hand or in the top rack of the dishwasher. Always BPA and phthalate-free for your ultimate reassurance. It is advisable to change bottle nipples every two months and you should change them immediately if they're damaged or weak. This award-winning brand was launched in the UK over 50 years ago and was founded with one simple goal - to make everyday life just a little easier for parents around the world. World-class research and development, baby-led products are what makes Mayborn Group a world-leader in products for parents. Tommee Tippee is here to enable parents to embrace and enjoy the roller coaster ride of bringing up a baby. All Tommee Tippee products are BPA, BPS, PVC, Phthalate and Nitrosamine free.