Avent now makes BPA-Free baby bottles. The PES Bottle Trainer Kit is a durable, anti-colic baby bottle that your little one can learn to drink from. Benefits of the PES Bottle Trainer Kit: * BPA-Free - Clinically proven to reduce colic. * The anti-colic valve flexes to allow air into the bottle, reducing colic. The soft, naturally shaped nipple makes it easier to combine breast and bottle feeding. * A clinical trial demonstrated that at 2 weeks of age, babies fed with the AVENT Bottle experienced less colic than babies fed with a conventional bottle. * Easy to grip handles makes it a perfect learning tool to transition your child from a sippy cup to a regular cup.