– Paced feeding: patented venting system ensures that milk only flows when a vacuum is created. Allows your baby to drink, pause and breathe at their own pace. \ \ – One size fits all: milk flow is automatically regulated by the strength of the applied vacuum, eliminating the need to adjust the nipple flow rate as your baby grows. \ \ – Medela bottle compatible: collect, store and feed easily using Medela bottles. The included multi-purpose cap prevents milk from spilling during transport. \ \ – Easy cleaning and storage: all parts of the Calma nipple are dishwasher safe (top rack) and can be stored effortlessly using the included multi-purpose cap and lid. \ \ – Made in Switzerland without BPA. \ \ Medela's Calma nipple features a patented venting system that allows milk to flow only when the baby creates suction. It is suitable for all ages, eliminates the need to regulate the flow and fits perfectly with Medela collection and storage bottles. Calma is easy to clean, store and transport. It is made without BPA for absolute safety. \