Dr Brown's Options+ 150ml vs 270ml: Which Bottle Size?
By Dr Browns | Published: 2026-10-30
Category: Comparisons
Compare Dr Brown's Options+ 150ml and 270ml bottles to find the right size for your baby's age and feeding needs, with practical guidance on when to size up.
Quick answer
Choose the 150ml Dr Brown's Options+ bottle for newborns and early months, and move to the 270ml size when your baby's appetite grows—usually around 3-4 months. Both offer the same anti-colic vent system, so the decision is mostly about capacity and how often you want to refill.
Why capacity matters for feeding
Newborns typically take small feeds, often 60-90ml per session, so a 150ml bottle is plenty and easier for little hands to hold. As your baby grows, their appetite increases, and a 270ml bottle means fewer refills during a feed and fewer bottles to prepare in advance.
The 150ml bottle is also lighter and more portable, making it a good choice for on-the-go feeds or for babies who prefer smaller, more frequent meals. The 270ml bottle, on the other hand, suits larger feeds and can also be used for storing expressed milk if you need extra capacity.
Same anti-colic system, different sizes
Both the 150ml and 270ml Options+ bottles feature Dr Brown's unique internal vent system that channels air away from the feed, helping to reduce colicky symptoms. This means you don't have to compromise on anti-colic benefits when choosing a size—you simply pick the one that matches your baby's current feeding volume.
The vent system works the same way in both bottles, so the only real difference is the amount of milk they hold. If you're unsure which size to start with, the 150ml is a safe bet for newborns, and you can always add a 270ml bottle later as your baby's appetite grows.
Size trade-offs at a glance
- 150ml bottle: Best for newborns and early months when feeds are small (60-90ml). It's easier to handle and takes up less space in a diaper bag. Start with the 150ml size if you're preparing for a newborn.
- 270ml bottle: Best for babies who take larger feeds (150ml+). Fewer refills and less prep time, especially for busy parents. Consider buying the 270ml four-pack when your baby starts taking bigger feeds.
- Both sizes: You can mix and match—use 150ml for daytime smaller feeds and 270ml for overnight or when you're out and about. Having both sizes gives you flexibility as your baby's appetite changes.
Product facts
- Dr Brown's Options+ Anti-Colic Baby Bottle 270ml Four Pack: The Dr Brown's Options+ range feature a unique internal vent system that channels air away from baby's feed as air can cause these colicky symptoms. This means the 270ml bottle provides the same anti-colic benefits as the smaller size, just with more capacity for larger feeds.
Dr Brown's Options+ Anti-Colic Baby Bottle 270ml Four Pack - Dr Brown's Options+ Anti-Colic 150ml Bottle: The Dr Brown's Options+ range feature a unique internal vent system that channels air away from baby's feed as air can cause these colicky symptoms. The 150ml bottle is ideal for newborns who take smaller feeds, and it still delivers the same clinically proven anti-colic venting.
Dr Brown's Options+ Anti-Colic 150ml Bottle
Which size fits your baby?
Best for
- Newborns and babies under 3 months who take small, frequent feeds.
- Parents who want a lightweight, portable bottle for on-the-go use.
Not for
- Older babies (6+ months) who consistently drink more than 150ml per feed—they'll need the 270ml size to avoid constant refills.
