The wide neck bottle from nip® has a round shaped teat made of food contact silicone. The integrated anti colic vent prevents air from being swallowed, thus reducing the risk of infant colics and the ACTIFLEX ® system prevents the teat from closing up, thus ensuring an even flow during feeding. The extra thick and perfect fit flange ensures optimum non drip fit on the bottle neck. The bottle has an additional Polypropylene (PP) sealing disc for a secure closure on the go. The body is extremely light, unbreakable and made of Polypropylene(PP). To guarantee a constant quality, the nip bottle is BPA free and produced in Germany.