Choosing the right baby bottle can feel overwhelming for new parents. This review cuts through the confusion by rigorously testing seven popular glass and silicone baby bottles, focusing on flow rate, ease of use, and overall design. We conducted a scientific flow rate test using a Medela breast pump to objectively compare each bottle's dispensing speed, providing crucial data for parents seeking the optimal feeding solution for their little one's developmental stage. This detailed analysis considers factors beyond just flow rate, encompassing factors such as ease of cleaning, leak resistance, and overall user-friendliness.Our comprehensive review evaluates each bottle's performance across multiple criteria, helping you navigate the various options available. From the slowest flow rates ideal for newborns to faster options for growing babies, we've analyzed the strengths and weaknesses of each bottle. This allows you to make an informed decision based on your baby's specific needs and your own preferences. Discover which bottles excelled in our flow rate test and which ones fell short, ultimately saving you time and ensuring a smoother feeding experience.
Pros And Cons
- Beautiful design
- Easy one-handed lid opening
- Precise liquid measurement increments
- Includes bottle cap for airtight transport
- Includes collapsible funnel
- Nipple doesn't hold back liquid well when inverted
- Larger size
- Nice lid design for easy one-handed opening
- Softer, thinner silicone nipple
- Nipple doesn't hold back fluid when inverted
- Air re-enters bottle through nozzle, potentially causing foamy fluid
- Simple and reliable
- Sturdy
- One-handed opening (though tight)
- Easy to clean and assemble
- Holds back liquid well when inverted
- Slow flow rate, good for newborns
- Lid is a little tight
- Beautiful design
- Lid pops off easily
- Economical feeding position
- Wide glass bottle opening, easy to clean
- Doesn't hold back liquid perfectly when shaken vigorously
Read more: 5 Best 8 oz Baby Bottles
Flow Rate Test Methodology
To ensure a fair comparison, I conducted a flow rate test using a Medela Swing breast pump set to the highest level in Deep Suction mode. Each bottle and nipple combination underwent a one-minute test, and the difference in weight before and after measured the dispensed fluid.

I modified the milk collector with a silicone collar for better sealing and created an SM cutle to prevent vent blockage. The tests were conducted repeatedly in a random order to eliminate pump-related variations and guarantee consistent results.

This rigorous approach ensured an accurate and objective comparison of the flow rates across different bottle and nipple combinations, providing valuable data for parents seeking optimal feeding solutions.

Flow Rate Results & Newborn Considerations
The flow rates varied significantly across the bottles tested. The E4 silicon-coated glass bottle (90mm) had the slowest flow rate at 2.3 ml per minute, followed closely by the Philips Avent glass bottle (5.2 ml/min).

These slower flow rates are ideal for newborns, closely mimicking breastfeeding pace. However, as babies grow, higher flow rates become necessary.

The remaining bottles exhibited a range of flow rates catering to different infant developmental stages. This highlights the importance of selecting the right bottle and nipple based on the baby's individual needs.

Philips Avent Glass Natural Baby Bottle Review
The Philips Avent glass bottle is a sturdy, reliable option with a thick glass body and a one-handed lid, although it can be tight. The nipple is firm and features a simple design for easy cleaning and assembly.

A significant advantage is its excellent liquid retention when inverted. The optional number one nipple provides a slow flow rate (second slowest), perfect for newborns.

Overall, this is a simple, durable, and easily cleanable option for parents of newborns.
Tommee Tippee Glass Bottle Review
The Tommee Tippee glass bottle is slightly larger than the Philips Avent, with a less refined increment marking. The lid design allows for easy one-handed opening.

It has a softer, thinner silicone nipple with a single vent design. However, this bottle leaked when inverted, dripping even with gentle shaking.

Interestingly, air re-entered the bottle through the nipple during testing, potentially resulting in foamy milk. This may be a design flaw affecting the feeding experience.

Dr. Brown's Options+ White Neck Glass Baby Bottle Review
Dr. Brown's bottle has a tight lid, making one-handed opening difficult. Its intricate anti-colic design, while effective, makes cleaning challenging.

The nipple lacks vents; air enters through the white collar and is channeled to the back of the bottle, but this bottle leaked significantly and had the fastest flow rate during testing.

The leaky design and cleaning difficulty make this bottle less user-friendly compared to other options.
Euphoria Silicone-Coated Glass Bottle Review
The Euphoria bottle features a glass body with a silicone coating, offering a soft, grippy texture. The lid easily pops off with one hand.

It includes a silicone filter that traps air, preventing it from entering the milk stream directly. This design is far easier to clean than the Dr. Brown's bottle.

The nipple offered the slowest flow rate among all tested and excellent liquid retention, making it ideal for newborns.

Hakka Gen 3 Natural Glass Baby Bottle Review
The Hakka Gen 3 bottle boasts a beautiful, well-crafted design with an off-center nipple. The lid opens easily with one hand, and the bottle's shape facilitates easier feeding.

It features a base vent on the nipple, eliminating the need to rotate the bottle. The bottle opening is wide, making cleaning simple.

The bottle retains liquid well when inverted, although slight leakage can occur with vigorous shaking.

Como Tomo Natural Feel Baby Bottle Review
The Como Tomo bottle features an almost entirely silicone body, offering durability. The lid is a bit tight, but it is easy to operate with one hand.

The nipple has two vents positioned opposite each other, eliminating the need to worry about the bottle's orientation during feeding.

The liquid retention is moderate; slight leakage occurs with shaking, but the wide opening simplifies cleaning.
BB Baby Glass Bottle Review
The BB Baby glass bottle, made by Dage, is aesthetically pleasing with an elongated lid for easy single-handed opening. The nipple is made of natural rubber.

The bottle has precise 5mm increment markings, enhancing accuracy in measuring liquids. However, the natural rubber nipple provides only moderate liquid retention when inverted, and leaks occur.

The bottle comes with an airtight cap and collapsible funnel for convenient transportation and formula preparation.

Conclusion & Recommendations
The Euphoria bottle stands out for its exceptionally slow flow rate, ideal for newborns and closely mimicking breastfeeding. The Philips Avent bottle offers a simple, durable alternative.

As babies grow, options like the Hakka Gen 3 and Como Tomo provide higher flow rates and convenient features. Dr. Brown's bottle, while effective, is less user-friendly due to cleaning difficulties and leakage.

The best bottle depends on individual needs, but the Euphoria and Philips Avent bottles are excellent choices for newborns, while the Hakka and Como Tomo cater well to older infants.
