Parents who bottle-feed their babies with formula face a series of important decisions right from the start. Choosing the right formula is one thing, but selecting the proper feeding bottle for a newborn is equally important — and often more confusing than expected. Even when narrowing the search to the most popular brands, the range of bottles available today is enormous. Sizes, materials, teat types, anti-colic systems — where do you even begin? This guide covers everything you need to know to make a confident choice.
Matching Bottle Size and Teat to Your Baby's Age
A baby bottle is not a one-size-fits-all product — it grows with your child. As your baby develops, you will need to move to larger bottles and teats designed for the next stage. Most manufacturers use age labels such as 0+, 3+, 6+, and 12+ to indicate which bottle suits which developmental phase. However, these markings can vary between brands, so always check the specific guidelines from the manufacturer you choose.
The bottle's capacity matters mainly because it determines how much liquid it can hold, but it is not the capacity that should guide portion sizes — that should always follow your paediatrician's advice and the instructions on the formula packaging. In practice, you can pour a smaller portion into a larger bottle without any issues.
Where size makes the biggest difference is the teat. A correctly sized teat ensures feeding comfort and mimics natural breastfeeding as closely as possible. A teat that is too large for a newborn may cause the baby to swallow excessive amounts of air along with the milk, which in the first months of life can lead to stomach discomfort, bloating, and colic. Getting the teat right from the start is one of the simplest ways to avoid these common problems.
[tip:Always check the age recommendation on both the bottle and the teat separately. Some brands sell bottles and teats in different packs, so the teat that comes with the bottle may not always be the ideal match for your baby's current age.]Anti-Colic Bottles — What Are They and Do You Need One?
Colic is one of the most common concerns among parents of newborns, and specialised anti-colic bottles are designed specifically to address it. Their construction differs from standard bottles in one key way: they incorporate a system that reduces or eliminates the amount of air a baby swallows during feeding.
Different brands use different approaches. Some place the teat's opening at the base rather than the tip. Others use a dedicated venting system or air-free valve that separates the air chamber from the milk, preventing air from mixing into the feed. Philips Avent, for example, offers its AirFree anti-colic valve system, while Tommee Tippee uses an advanced vented design in their anti-colic range.
Regardless of which bottle you choose — anti-colic or standard — it is always worth observing your baby during feeding. Sometimes air swallowing is caused not by the bottle itself but by feeding position or technique. If your baby shows signs of discomfort after meals, an anti-colic bottle may be a worthwhile investment. Explore the full range of feeding accessories at Medpak to find the right solution.
[products:philips-avent-anti-colic-bottle-0-m-125-ml, philips-avent-anti-colic-bottle-1-m-260-ml, philips-avent-anti-colic-bottle-3-m-330-ml, philips-avent-responsive-natural-bottle-with-airfree-anti-colic-valve-125-ml, philips-avent-responsive-natural-bottle-with-airfree-anti-colic-valve-260-ml, tommee-tippee-advanced-anti-colic-bottle-0m-260-ml-2-pieces]How Many Bottles Does a Newborn Need?
Every bottle should be thoroughly washed and sterilised after each use — this is particularly important during the first six months of a baby's life, when the immune system is still developing. For this reason, most parents find it practical to have at least two bottles on hand at all times: one for the current feed and one as a clean backup. The second bottle can also be used for offering water or other liquids as the child grows.
As your baby starts teething, you may need to replace teats more frequently, since little teeth can easily damage them. The most economical approach is to choose a bottle system where replacement teats are readily available and easy to swap. Brands like Philips Avent and Dr Brown's offer a wide selection of replacement teats in various flow rates, making it simple to upgrade as your child grows without replacing the entire bottle.
When it comes to upgrading bottle size, simply purchase the next age-appropriate bottle as your baby reaches a new developmental stage. There is no need to buy all sizes in advance.
[tip:Starter bottle gift sets are a practical option for new parents — they typically include multiple bottle sizes, replacement teats, and sometimes a bottle brush or steriliser, all designed to work together as a system.] [products:philips-avent-baby-gift-bottle-set-2-bottles-2-pacifiers, philips-avent-baby-gift-bottle-set-4-bottles-pacifier-brush, philips-avent-responsive-baby-bottle-natural-125-ml, philips-avent-responsive-baby-bottle-natural-260-ml, philips-avent-responsive-baby-bottle-natural-260-ml-x-2, philips-avent-responsive-baby-bottle-natural-330-ml]Plastic vs Glass — Which Bottle Material Is Best?
Baby bottles are typically made from one of two materials, each with clear advantages and trade-offs.
Plastic bottles are by far the most common choice. They are lightweight, easy to handle (both for parents and eventually for the baby), and virtually unbreakable — a significant practical advantage when you are feeding on the go or when your child starts holding the bottle independently. Plastic also retains warmth slightly longer, keeping prepared formula at a comfortable temperature for a few extra minutes. The downside is durability: plastic bottles tend to show wear over time and generally need replacing every three months or so.
Glass bottles are less common but offer excellent longevity. They do not scratch, discolour, or absorb odours, and they are easy to sterilise. The obvious drawback is weight and fragility — glass bottles are heavier and can break if dropped. Brands like Philips Avent offer glass versions of their popular Natural range for parents who prefer this option.
[warning:Whichever material you choose, always make sure the bottle is clearly labelled BPA-free. Bisphenol A (BPA) is a chemical that was once common in plastics but has since been linked to health concerns. Reputable brands mark their products with "BPA free" on the packaging — always check for this before purchasing.]Choosing the Right Bottle — A Quick Summary
With so many options available, it helps to focus on the factors that matter most:
- Start with the right size — a smaller bottle (125 ml) with a slow-flow teat for newborns, upgrading gradually as your baby grows.
- Consider an anti-colic system if your baby is prone to gas, bloating, or fussiness after feeds.
- Have at least two bottles ready at all times so one is always clean and available.
- Choose a system with replaceable teats — teats wear out faster than bottles, especially once teething begins.
- Check for BPA-free labelling on any plastic bottle before buying.
- Pick a trusted brand with a wide ecosystem of compatible accessories — Philips Avent, Dr Brown's, and Tommee Tippee are all well-established options available at Medpak.
A well-chosen bottle makes daily feeding smoother and more comfortable for both parent and baby. Browse the complete baby feeding collection at Medpak — from newborn starter sets to replacement teats and bottle warmers, all shipped from within the EU with fast delivery and no customs fees. For related products that support your child's overall wellbeing, explore the children's health section.
[note:All products at Medpak are shipped from within the European Union, ensuring quick delivery and no additional customs charges for customers across Europe.]Key Takeaway: The best baby bottle is one that matches your child's age, supports comfortable and safe feeding, and fits into a system where teats and accessories are easy to replace. Start small, choose BPA-free materials, consider anti-colic features if needed, and always follow your paediatrician's guidance on portion sizes.
