Hegen PCTO Feeding Bottle PPSU, 150ml/5oz is the world’s first feeding bottle with a unique one hand close. Useful for parents with their hands full, no screw threads, just Press-to-Close and Twist-to-Open! Preparing a bottle has never been this simple. Hegen PPSU range is made of FDA compliant food-contact grade and NSF certified medical grade material. PPSU is widely used in the manufacturing of medical appliances due to its superior toughness and high temperature resistance. It combines the advantages of both glass and plastic materials ; BPA-free and lightweight. PPSU is naturally amber-coloured and contains no artificial pigments. Simply swap adapters, feeding collar and storage lids to express, store and feed in a single container with no wasteful transfer of milk, making every drop count! A Hegen is both aesthetically pleasing and inherently functional! Comparing these bottles with other brands of bottles, this bottles is priced a little more because of the excellent properties of the PPSU material & the unique design of the Hegen PCTO Feeding Bottle, it's perfect & safe for your precious little one!