The ECOtanka Adaptor Lid is a plastic lid made from PP#5 which is considered to be one of the safest plastics for food.
This lid is BPA FREE, it is also BPS & BPF FREE. (The industry removed BPA from polycarbonate plastics and changed to BPS or BPF, which is in fact just as bad as BPA!)
This lid can fit almost all bottles except the megaTANKA bottle, but is best suited for the teeny or miniTANKA bottles for Kids.
The Adaptor is only a two-piece lid that can fit a number of teet products on the market.
Note: Teet not included with lid