Product FeaturesWide bottle shape for easy filling and cleaningAccurate feeding measurement markings on bottleDome cap seals nipple for spill-proof mixing and transportationDishwasher and microwave safeTwo 11oz bottles The Perfect Philips AVENT 2-Pack for Mom and Dad. The Avent BPA Free Bottle is designed to fit your baby’s growing needs. Its anti-colic valve flexes to allow air into bottle to prevent vacuum build-up. Air bubbles move away from nipple and into bottle, not into baby’s tummy. Its two piece anti-colic system consists of the AVENT nipple and adapter ring which is naturally shaped to promote proper latch-on.Features:Less fussing especially at night Less colic BPA-Free. Bottle is made from Polypropylene (PP) a BPA-Free material