Lansinoh Breastmilk Storage Bottles are perfectly sized for feeding newborns and infants, allowing moms to portion milk appropriately. Each bottle includes a leak-proof, sealing cap that prevents spills and keeps the milk safe and fresh until feeding time. The wide-neck design makes pouring, filling, and cleaning much easier, and they are fully compatible with Lansinoh Natural Wave Nipples, which are designed to encourage natural feeding behavior and transition easily between breast and bottle. The bottles also have easy-to-read volume markings, helping moms keep track of how much milk has been expressed or consumed, supporting better feeding management.