Natural Glass Baby Bottles Gentle & Extra Slow Flow - Newborn Friendly

In this review the Natural Glass Baby Bottles are judged primarily as a breastfeeding-friendly bottle set for parents who want a clean, durable alternative to plastic. The three-pack of 8 oz glass bottles aims to mimic breastfeeding with a soft, breast-shaped nipple and slow flow M nipple included, and the biggest reason to buy is the combination of a realistic latch design and premium borosilicate glass that is free of BPA, BPS, phthalates and lead. For parents focused on hygiene and ease of cleaning, these bottles deliver practical benefits without unnecessary extras.

Key Features

• Soft and Anug-Fitting Nipple: The breast-shaped nipple is designed to provide a snug, natural latch so babies can switch between breast and bottle more easily.
• Premium Borosilicate Glass: The glass body resists heat and avoids common plastic chemicals, offering reassurance against microplastics and long-term wear.
• Heat-Resistant and Sterilizable: Bottles can be sterilized in a bottle warmer, microwave, sterilizer or boiling water, making routine cleaning straightforward.
• Laser Engraving Without Lead: The bottle markings use laser engraving instead of ink printing, reducing concerns about surface toxins.
• New Nipple Guidance Points: Small points on the nipple guide an appropriate latch and support correct suction habits during breastfeeding training.
• Three 8 oz Bottles Included: The three-pack supplies multiple bottles with slow flow M nipples, convenient for frequent feedings and rotation.

Who It's For

This set is best for parents of newborns and infants who are breastfeeding or planning to combine breast and bottle feeding, and who prioritize materials safety and easy sterilization. The realistic nipple shape and guidance points make it especially useful for babies who need a gentle transition from the breast.

Parents who want ultra slow flow exclusively or who need convertible nipple sizes in the box may need to buy additional nipple options, and those seeking a lightweight, unbreakable bottle for travel or older toddlers should consider alternatives to glass.

Pros & Cons

Pros

• High-quality borosilicate glass offers durability and a cleaner-feeling feeding surface.
• The soft, breast-shaped nipple and guidance points help with latch and breastfeeding continuity.
• Easy to clean and sterilize in a variety of common household methods.
• Laser engraving and toxin-free materials reduce exposure concerns.

Cons

• The included slow flow M may be perceived as faster by some infants, so some parents report mixed opinions on flow rate.
• Glass weight and fragility make these less ideal for very young, mobile toddlers or for travel when breakage is a concern.

Specifications

Pack	3 bottles (pack of 3)
Capacity	8 oz per bottle
Nipple Type	Soft, breast-shaped slow flow M with guidance points
Material	Borosilicate glass (BPA, BPS, phthalate free)
Age Recommendation	Newborn / 0-3 months+
Printing	Laser engraving (no ink, no lead)

Our Verdict

These Natural Glass Baby Bottles are a solid choice for parents who want a breastfeeding-friendly bottle made from safe, heat-resistant glass. The realistic nipple shape and easy sterilization make them good value for combination feeding, though families needing the slowest possible flow or a travel-friendly unbreakable bottle should weigh alternatives. Overall, they balance material safety and practical design well.

Frequently Asked Questions

Are these bottles safe to sterilize in a microwave or boiling water?
Yes. The borosilicate glass construction is heat-resistant and the bottles can be sterilized in a bottle warmer, microwave, sterilizer or by boiling water.

What flow rate is included with the bottles?
Each bottle in the pack includes a slow flow M nipple designed for newborn and early months, though some parents report mixed impressions of the perceived flow speed.

Do the bottles use printed markings?
No. Volume markings are done with laser engraving rather than ink printing, and the design is stated to be free of lead.