PPSU (Polyphenylsulfone) is a type of high performance polymer. It is a plastic but has the benefits of glass which is a perfect material for baby bottles. It is incredibly durable, temperature and fall resistant. Which does not absorb odor or color and you can sterilize without any deformation.

Soft and flexible nipple: For seamless switch between breast and bottle.
Food grade PPSU material: BPA free, safe and environmental friendly.