Philips Avent Natural Glass Baby Bottles with Natural Response Nipples (Slow Flow, Flow 2) 4oz, 4-Pack (SCY910/04)
Product description
Key takeaways
If you’re trying to make bottle-feeding feel more like breastfeeding, these Philips Avent Natural Glass baby bottles are built around that idea. The Natural Response nipple is designed to let your baby control the milk pace, and the wide, breast-shaped nipple aims to provide a soft feel that mimics what babies get at the breast.
They’re also made from borosilicate glass (BPA-free, per the listing), with a no-drip nipple design intended to help reduce milk drips at the tip—small detail, but it’s the kind of thing that matters during busy feedings. The Flow 2 nipple includes an anti-colic valve meant to send air away from your baby’s tummy to help reduce colic and discomfort.

The essentials
On paper, this is a practical set for families who want a glass bottle option that’s easier to align with breastfeeding habits. Glass also tends to appeal to parents who prefer a material that can handle temperature changes—this one is described as heat and thermal shock resistant, so you can store in the fridge and warm when needed, and it’s meant to be easy to wash and sterilize.
A micro-example of how it may play out: after warming, you’d attach the Flow 2 Natural Response nipple, feed your baby at their own pace, and then—based on the no-drip design—expect less mess around the bottle tip between swallows. The anti-colic valve design is the “comfort” feature you’re buying for, especially if your baby tends to fuss during or after feeds.



Still, there’s one catch to keep in mind: Flow 2 can be the right stage for some babies and not for others. If your baby needs a slower or faster flow than this nipple provides, the experience can feel frustrating no matter how good the bottle design is.
Key features
What you’ll notice most here is the combination of nipple behavior and bottle material. The Natural Response nipple is the headline—positioned to help babies control milk pace similarly to breastfeeding. The bottle is borosilicate glass, BPA-free, and built to withstand heat and thermal shock (as stated).

The set also includes: - Natural Response nipples with Flow 2 (listed as Slow Flow / Flow 2 on the product name) - A no-drip nipple design to help prevent lost milk from the tip - An anti-colic valve intended to reduce colic and discomfort by sending air away from your baby’s tummy
Tech specs
- Name: Philips Avent Natural Glass Baby Bottles with Natural Response Nipples (Slow Flow, Flow 2)
- Type: Baby bottle set with Natural Response nipples
- Size: 4oz
- Capacity: 4oz (per bottle)
- Material: Borosilicate glass (BPA free)
- Color: Not specified in the provided details
- Display: Not applicable
- Resolution: Not applicable
- Refresh rate: Not applicable
- Processor: Not applicable
- Memory: Not applicable



Who it suits best (and who should think twice)
It makes sense if you want a glass bottle option and you care about pacing during feeds—especially if you’re combining breast and bottle feeding and want the nipple shape and feel to be closer to the breast.
It may not be the best match if your baby already does great with simpler nipples and you don’t need the breastfeeding-style control. Also, if Flow 2 is not the right stage for your baby’s feeding speed, you could end up with more frustration than value from the extra comfort/pacing features.

Practical buying checklist
Before you commit, it’s worth checking a few basics so you don’t get stuck with a mismatch:
- Confirm the nipple flow stage: this set is listed with Flow 2 (and the name references “Slow Flow, Flow 2”). Make sure it aligns with your baby’s current feeding needs.
- Think about your routine: the glass material and thermal shock resistance are useful for fridge storage and warming, but your day-to-day cleaning/sterilizing habits still matter.
- Consider how much you prioritize mess control: the no-drip design is intended to help prevent lost milk from the tip, which is great for reducing spills, but you’ll still want to feed and handle the bottle the way you normally would for newborns.



Final verdict
Should you buy it? These Philips Avent Natural Glass baby bottles with Natural Response nipples are a strong choice if you’re aiming for a breastfeeding-like feeding experience, prefer borosilicate glass (BPA-free, per the listing), and want comfort-focused design elements like an anti-colic valve.
Skip it if your baby needs a different flow stage than Flow 2, or if you’d rather prioritize simplicity over nipple-controlled pacing. In that case, it may feel like you’re paying for features you won’t fully use.
Mini FAQ
Are these bottles BPA-free? Yes—borosilicate glass is described as BPA-free in the provided details.
Do the nipples help with milk drips? The listing describes a no-drip nipple design intended to help prevent milk from leaking from the tip.
What is Flow 2 meant to do? Flow 2 includes an anti-colic valve designed to reduce colic and discomfort by sending air away from your baby’s tummy.
How many bottles are included? The pack includes four 4oz bottles, as stated.
Can you store and warm the bottles? The glass is described as heat and thermal shock resistant, and it’s described as safe to store in the fridge or warm.
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