GaksiMil Head is made from PP (Polypropylene).
 
Cleaning Instructions : After removing the head from breast suction cup and membrance, place the head in boiling water for approximately 10-20 seconds to sterilize.
 
How to use : Wait for approximatey 20 seconds after sterilization before use. Attach the membrane to the head and secure the head to the bottom of the premium breast suction cup.