Question:

What are the breast milk bottles made out of?

Answer:

Medela breast milk bottles are made of FDA food contact grade polypropylene.  Medela bottles are BPA-Free and designed for safe feeding and long-term storage of breast milk.

Polypropylene has a recycle number of 5 or PP stamped into the plastic item.  Medela only uses new, virgin materials in manufacturing of all products.