Natural Start Glass Bottle Review: A Multi-Use Solution for Feeding and Storage

Finding a baby bottle that grows with your child and serves multiple purposes can save you money and cabinet space. The Natural Start Silicone Coated Glass Bottle set from Tommeetippee promises exactly that: a glass bottle that can convert into a cup and double as a storage jar. In this review, we put the set to the test, focusing on design, ease of use, and whether it lives up to the hype.

We tested the Natural Start Silicone Coated Glass Bottle alongside the Natural Start Baby Bottle Decorated (the decorated version) to see how the glass option compares. Our goal is to help you decide if this multi-use bottle is the right choice for your feeding and storage needs.

What Makes the Natural Start Glass Bottle Set Unique?

The Natural Start Silicone Coated Glass Bottle is not just a bottle. The set includes a glass cup body, a silicone sleeve for grip and protection, a nipple for newborn feeding, and a lid that turns it into a cup or storage jar. This means you can use it as a baby bottle, a sippy cup, or a container for snacks, purees, or breast milk storage.

The glass is borosilicate, which is thermal shock-resistant and free from BPA, BPS, and other chemicals. The silicone sleeve adds a layer of protection against drops, though it's not shatterproof. The lid creates an airtight seal, making it suitable for fridge or freezer storage.

• Includes: glass cup, silicone sleeve, nipple, and storage lid
• Converts from bottle to cup to storage jar
• Borosilicate glass – thermal shock resistant and chemical-free

Design and Build Quality

The glass feels sturdy and the silicone sleeve fits snugly, with a textured surface for grip. The nipple is made from soft silicone and mimics breastfeeding, similar to the nipples in the Advanced Anti-Colic Grow with Baby Bottle Set. The lid clicks on securely and doesn't leak when shaken upside down.

One trade-off: the glass bottle is heavier than plastic or silicone options, which might be challenging for very young babies to hold. However, the silicone sleeve helps, and older babies who can hold their own bottle may manage fine. The glass also retains heat longer, so warming milk in it works well, but it can get hot to the touch if you overheat.

• Silicone sleeve provides good grip and drop protection
• Lid is leak-proof for storage and travel
• Heavier than plastic – consider your baby's age and strength

Performance: Feeding, Conversion, and Storage

As a bottle, the nipple flow is slow and steady, suitable for newborns. The anti-colic vent in the nipple reduces air intake, which helped with gas during our tests. When you're ready to transition, simply swap the nipple for the included lid to create a cup. The lid has a small drinking spout that works for older babies, though it's not a straw cup. For straw drinking, you might prefer the Starter Straw Cup later.

For storage, the jar holds about 4 oz comfortably. We used it to store expressed breast milk in the fridge and purees in the freezer. The glass didn't absorb odors or stain. The silicone sleeve can be removed for thorough cleaning, and all parts are dishwasher safe (top rack).

• Anti-colic nipple reduces gas
• Lid spout works for cup drinking, but not straw
• Dishwasher safe – easy to clean

Comparing the Glass Bottle to the Decorated Version

The Natural Start Baby Bottle Decorated is a silicone bottle with a colorful design, while the glass bottle is clear with a silicone sleeve. The silicone bottle is lighter, softer, and squeezable, which some babies prefer. The glass bottle is more durable against scratches and won't degrade over time like silicone can with repeated sterilization.

If you prioritize lightweight and softness, go with the decorated silicone. If you want a long-lasting, chemical-free option that can also serve as storage, the glass set is better. Both use the same nipple, so you can mix and match parts.

• Glass: heavier, non-porous, multi-use
• Silicone: lightweight, soft, colorful
• Same nipple compatibility – easy to swap

Who Is This Set For?

This set is ideal for parents who want a minimalist approach – one product that serves as a bottle, cup, and storage jar. It's also great for eco-conscious families who prefer glass over plastic. However, if you need a lightweight bottle for on-the-go or a straw cup for independent drinking, you'll need additional products.

For storage, the Made for Me Milk Collector Bottles are a better choice if you need larger volumes. But for small portions and short-term storage, the Natural Start glass jar works well.

• Best for: newborn to 6 months as bottle, 6+ months as cup/storage
• Not ideal for: toddlers who need straw cups or very active babies

The Natural Start Silicone Coated Glass Bottle set delivers on its promise of multi-use functionality. It's well-made, safe, and versatile. While it's heavier than silicone alternatives, the ability to convert from bottle to cup to storage jar makes it a smart investment for parents who value simplicity and durability. If you're looking for a baby bottle that can do more than just feed, this set is worth considering.