Philips Avent Natural 2oz/60ml bottles for newborn babies are ideal for gentle drinkers who may not have strong sucking power. They come with First Flow nipples and include a small container that helps ensure the appropriate amount of milk for the babys smaller tummy. It\'s a must-have among newborn essentials - consider it when looking for baby shower gifts! First Flow nipples are made of soft, durable silicone, which is safe, odorless, and flavorless. An ultra-soft, wide nipple promotes natural latch-on so you can easily combine breastfeeding and bottle feeding. It mimics the feel of the breast and comforts your baby. The flexible spiral design combined with the comfort petals allows for a natural movement while your baby feeds. The bottles are designed to reduce colic and discomfort by venting air away from your baby\'s tummy. The ergonomic shape makes it comfortable for parents to hold and easy for small fingers to grasp. Assembly is simple with only a few parts, and the wide bottleneck makes filling and cleaning easy. The Natural newborn baby bottles are made from polypropylene, a BPA-free material, and works with all nipples and caps from the Natural line. When it\'s time, continue with the Natural Response Baby Bottle and nipple flow number 3 (SCY963/04) as your baby grows and strengthens the sucking power. However, we recommend that parents ultimat:ly make decisions based on the observations of their baby.