The AVENT Feeding Bottle uses the unique AVENT Teat, which promotes healthy, active feeding and works with baby’s natural feeding rhythm. The AVENT Teat makes it easier for baby to switch between breast and bottle and is clinically proven to reduce colic. Shaped for stability and comfort, the bottle’s waisted shape is easier to hold and its wide-neck design makes filling easy. This ultra-hygienic bottle is easy to clean and assemble as there are no small parts. Clear markings on the bottle ensure accurate measurement and make it easier to determine how much baby has been fed. The dome cap seals the AVENT Teat securely to ensure leakproof mixing and travel without the need for separate sealing discs. Polypropylene Feeding Bottle BPA Free.