The Twist & Feed attachment for Philips Avent baby bottles is the perfect addition to your night station. The principle of operation is quite simple: before bedtime, you fill the baby bottle attachment with the desired amount of powder and screw it onto your Philips Avent baby bottle. You then place the baby bottle along with the attached lid on our night station as usual. Nighttime feeding without stress and baby crying. At the first signs of hunger from your baby during the night, you can now take the baby bottle from the night station, open the attachment inside with a simple hand movement, and the prepared powder in the correct amount falls directly into the baby bottle - ready to drink immediately. The next day, after a restful night, you can easily boil the attachments together with the baby bottles in boiling water or in a sterilizer. Package includes: Liini milk powder attachment for Philips Avent baby bottles (glass & plastic). The Liini night station is available separately and is not included in the package.