
The BPA Free Bottles Green to Grow are made of PES (polyethersulfone), material that gives them the golden color of course. They are guaranteed without phthalate, or bisphenol A.
Green to Grow baby bottles, recognizable by their fun designs, accompanied by non-toxic silicone nipples BPA free as well.
Caps and seals are made of polypropylene (PP) which is also BPA-free.