thinkbaby uses a medical grade of plastic, which is formulated to be free of PVC, BPA, nitrosamines and phthalates. These chemicals are never found in thinkbaby products.
The anti-colic system is built into the silicone nipple so there are no extra parts to get lost or damaged and it is easy to clean.
Each twin pack comes with two bottles including the bottle bases, collar rings, travel caps and stage 1 cross cut, slow flow anti-colic nipples.