Product Description Going out is simple and easy with the Spout Adapter because it quickly changes a standard bottle of water into a sippy cup. The drip-free spout is made from silicone and encourages healthy oral development. Its small size saves space and provides a back up to the everyday sippy cup. From the Manufacturer BPA free! Stop carrying around multiple baby bottles while traveling. Simply turn a regular water bottle into a toddler bottle! Adapter fits most disposable water bottles. Polypropylene with silicone nipple.