Happy Feeding For a Happy Baby - Our patented Duo-Flo bottle nipples are designed with 2 valves that flex and adjust the flow of milk to your baby's feeding pace, reducing colic, gas, and spit-up for a better feeding experience with no nipple collapse and no interruptions. Different Flow Rates for Different Stages - We offer replaceable anti colic bottle nipples in 3 levels of flow rate for your growing baby: slow flow level 1 or 0 (typically 0-3+ Months) , medium flow, level 2 nipples (3-9+ months), and fast flow, level 3 nipples (9-12+ months) that are interchangeable as your baby's feeding needs change. Soft Silicone Nipples for Breastfeeding Babies - Each nipple is designed to mimic the breast-like shape of Mom to promote a natural latch for an easier transition between breastfed & bottle feeding. Our standard neck nipple replacements are compatible with most other standard neck bottles available on the market for an anti colic solution. Easy to Clean & Sterilize - Our durable replacement baby bottle nipples are dishwasher safe and sterilizer safe for quick, hassle-free cleaning. Each pack includes 6 replacement nipples for the selected flow rate, helping you be prepared with backups for feeding time! Parent Designed, Safety First - Avima Baby Bottles came to life after a frustrated first-time mom & physician's assistant needed a solution for her newborn struggling with colic, and existing bottles just didn't cut it. We prioritize safety with BPA-free bottles for babies that meet the highest US standards for peace of mind and a happy feeding experience for you and your baby, every time. Our patented Duo-Flo anti colic baby bottle nipples minimize colic, gas, and spit-up by flexing and adjusting the milk flow according to your baby’s feeding pace, ensuring a smooth and uninterrupted feeding experience with no nipple collapse and less air in baby's tummy. These BPA-free bottle nipples were co-created by a parent and physician's assistant, offering a breastfeeding-friendly option with 100% soft silicone nipples that mimic the natural feel of mom, making them ideal for babies transitioning from or between breastfeeding. Each nipple pack includes a set of 6 standard neck nipples only that are interchangeable to accommodate your growing baby. We offer slow flow (level 0 or 1), medium flow (level 2), and fast flow rate (level 3) nipples for feeding at all stages as needed from 0-3 months, 3-6 months, and 9 months+, and the wide neck bottles are transitional to use with our training sippy cup spouts for toddlers. Standard Neck Nipples fit any other standard neck bottle, including Avima Baby Standard Neck Bottles. Avima Baby Wide Neck baby nipples for bottles are only compatible with Avima Baby Wide Neck bottles. Our dedication to quality and safety comes from personal experience – when our co-founder became a first-time mom in 2018, she sought a better alternative to existing colic relief baby bottles, leading to the development of Avima Baby feeding bottles with Duo Flo nipples in collaboration with her brother and leading baby products R&D teams. Trusted and used by parents worldwide, Avima Baby Anti Colic Bottles provides a superior feeding solution that combines functionality, safety, and affordability For Moms, Dads and Caregivers. Suitable for babies of all stages, Avima Anti colic Baby Bottles are must-haves for every parent, ensuring a happy and comfortable feeding time for your little one.