What to know about Lifefactory 4 oz Glass Baby Bottle with Silicone Sleeve & Stage 1 Nipple
Why it stands out
Why we like it
It is The Bump's top glass pick and is recommended by Romper and Fatherly. The sippy and water-bottle tops stretch its useful life well beyond infancy.
What to know
Score breakdown
Nipple acceptance and latch, flow consistency, anti-colic venting and leak resistance, as observed by hands-on testers (BabyGearLab leakage/nipple scores, Babylist, Milkology) and owner reports.
What touches the milk: borosilicate vs tempered glass, silicone or stainless steel vs plastic parts, independent tests for BPA, lead and phthalates (Consumer Reports), lead-in-markings history and recalls (CPSC), and plastic-free claims.
Resistance to thermal shock and drops, whether a protective silicone sleeve or coating is included, and reports of chipping or cracking.
Number of parts, neck width, dishwasher and sterilizer compatibility, and whether markings stay legible over time.
Weight, grip, readable volume markings, breast-pump compatibility, and versatility (sippy/cup conversion, interchangeable nipples).
Price per bottle relative to performance, durability, and availability of replacement parts and nipples.
Lifefactory 4 oz Glass Baby Bottle with Silicone Sleeve & Stage 1 Nipple specs
Materials
- Bottle body material
- Glass
- Glass type
- Borosilicate
- Other milk-contact parts
- Silicone nipple; cap/collar
- BPA-free (manufacturer claim)
- Yes
Durability
- Protective sleeve/coating included
- Yes
Design
- Available sizes
- 4, 9 oz
- Neck type
- Narrow
- Anti-colic system
- Vented nipple
- Empty weight (BabyGearLab measured)
- 6.3 oz
Purchase
- Bottles in listed pack
- 1 bottles
- Approx. price per bottle
- 15.99 USD
Care
- Dishwasher safe
- Yes
Compare prices
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Prices and availability may change. The retailer's price and availability at checkout govern the transaction.
| Retailer | Price | Availability | |
|---|---|---|---|
| AmazonLowest | $14.99 | In Stock | View deal |
| Walmart | Check price at retailer | Check at retailer | Check at retailer |
Based on 2 retailer price observations captured during the last 90 days.