10 Best Non-Toxic and Eco-Friendly Baby Bottles
Why Choose a Plastic-Free Baby Bottle?
When it comes to your baby’s health, bottle safety is non-negotiable. A recent study revealed that plastic bottles can leach toxic chemicals—especially when exposed to high temperatures (like sterilizing). [Check out the article on NIH, National Library of Medicine: Bisphenol A leaching from polycarbonate baby bottles into baby food causes potential health issues] Substances such as BPA and phthalates are known endocrine disruptors, and they simply don’t belong in anything that touches your baby’s milk.
Even more concerning? These chemicals have been linked to developmental issues, hormone disruption, and even long-term health risks. As conscious parents, avoiding plastic baby bottles is one of the easiest ways to create a safer feeding routine.
Thankfully, we now have plenty of plastic alternatives. The best glass baby bottles and stainless steel bottles are not only free of harmful toxins, but they’re also incredibly durable and sustainable. With options like pharmaceutical-grade borosilicate glass, natural rubber nipples, and bottles made with eco-friendly materials, you can finally enjoy peace of mind.
Check out these Top Eco-Friendly and Non-Toxic Breast Milk Storage Options!
Are Silicone Baby Bottles Safe?
Silicone bottles are often marketed as a safer choice than plastic. While silicone is indeed free from BPA, phthalates, and PVC, there are still concerns about chemical leaching—especially when storing fatty foods like breast milk or formula.
We used Como Tomo silicone bottles with my daughter, and while they worked beautifully, I later learned about silicone’s limitations. If you do choose silicone, look for bottles made with medical-grade silicone, free from endocrine disruptors, and designed for high durability.
That said, if you’re aiming for the safest, most sustainable option, glass vessels and stainless steel baby bottles still come out on top.
1. Nuk Simply Natural Glass Baby Bottles
The Glass Baby Bottles by Nuk are a great non-toxic and sustainable baby bottle option. The body is made entirely from glass, which is infinitely recyclable. The glass will not leach any toxic chemicals into your baby's milk. These bottles are also dishwasher-safe which makes them a convenient option, especially if you have other young children in your house and those dishes are forever piling up!
Extra-soft nipple, to resemble the feel of breastfeeding
Slow-flow nipple
Anti-colic air vent
BPA-free
2. Mason Bottle 8 Ounce Glass Baby Bottles DIY Kit
This is a really good option if you already have 8 ounce mason jars in your home! This kit includes two silicone nipples, one sleeve, and one cover, which lets you convert the mason jars you already have in your home into non-toxic baby bottles! You can also store your breastmilk in these jars, so this is a really great all-around option! I also have to highlight the sustainability feature of re-utilizing a product that you already have in your home. We use mason jars for so many different things in our home, and this further shows just how versatile glass jars can be!
Made in the USA
Dishwasher safe
Lead-free
BPA-free
BPS-free
3. Lifefactory Glass Baby Bottle
The lifefactory glass baby bottles are a very popular option! They are made with high quality borosilicate glass that is thermal shock-resistant. This allows for a safe transition from the freezer to boiling hot water, and prevents shattering!
Made in the USA and Europe
Dishwasher safe
BPA-free
4. Dr. Brown's Wide-Neck Glass Baby Bottles
This popular brand has created a recyclable glass baby bottle option for us mamas who want a non-toxic option for our babies! Dr. Brown's has also collaborated with plasticbank to reduce the amount of plastic bottle waste in our oceans!
Dishwasher safe
Wide-neck, breast-like nipple
Anti-colic vent
BPA-free
5. Tommee Tippee Natural Start 3 Uses Glass Baby Bottle
These glass bottles can be used for bottle feeding, as travel food jars, and open cup drinking! We love products that are versatile, as this reduces the number of different products that we need! These silicone bottle nips also promote natural, easy latching to allow your baby to transition easier between bottle and breast.
Medical-grade glass
BPA-free
Phthalate-free
6. Klean Kanteen Baby Bottles
If you're looking for stainless steel baby bottles, these are the ones I would choose for my own daughter. They are free from harmful chemicals, and are made with a wide opening for easy filling and cleaning! This brand is also dedicated to sustainability - they have reduced their greenhouse gas emissions by 50% by using 90% recycled stainless steel in their products. I can see why they are such a popular choice!
Future tip: Klean Kanteen also makes a sippy cup version for older kiddos!
18/8 Stainless Steel, 90% recycled
Medical grade silicone nipple, slow-flow
Dust cover made of BPA-free plastics (you don't have to use this if you are wanting to avoid all plastic parts)
Climate Neutral Certified Brand
Certified B Corporation
1% for the Planet
7. Pura Kiki 5oz/150ml Stainless Steel Anti-Colic Infant Bottle
This is another great plastic-free product line! They make stainless-steel baby bottles with medical grade silicone nipples. This bottle also comes with a silicone sleeve, with many different colors to choose from (Moss is my favorite)!
Medium-flow nipple
Anti-colic vent
MADESAFE Certified
8. Hamarue 3-in-1 Stainless Steel Cup
This cup transforms from a bottle, to a sippy cup, to a stainless steel water bottle with a straw lid. I love this sustainability feature, because it really grows with your child! The nipples are made from high quality food grade silicone, and the body is made from vacuum sealed stainless steel to keep your baby's milk (or water/juice if using it as a sippy/straw cup) cold!
Food-grade silicone
BPA-free
PET-free
Phthalate-free
Cadmium-free
Lead-free
9. Nanobébé Flexy Silicone Baby Bottle
This bottle shape and nipple design provides a natural feel for baby, which is great for mamas alternating between bottle and breast to avoid nipple confusion. These bottles also come in several different color options!
Anti-colic valve
BPA-free
PVC-free
Lead-free
Phthalate-free
10. Como Tomo Silicone Baby Bottles
These bottles are made with medical grade silicone and are dishwasher safe to make for easy cleaning. You can choose from slow flow or fast flow nipples, so you can choose the flow of milk that works for your baby. If you are a breastfeeding mama, the silicone is the closest replica to breastfeeding. Your baby can use his or her little hands to squeeze the silicone bottle to increase the milk flow, similar to how they can do the same at your breast while nursing.
Como tomo baby bottles are:
BPA-free
PVC-free
Phthalate-free
Nitrosamine-free
Made with medical-grade silicone
Final Thoughts
When it comes to feeding our little ones, every choice feels big—and that’s because it is. Deciding between glass baby bottles, stainless steel bottles, and other plastic alternatives isn’t just about convenience; it’s about creating a healthier start for your baby and a gentler footprint on mother earth.
Plastic may seem easier at first, but with the use of BPA and other toxic additives in so many products, it’s clear that moving toward friendly materials like glass and stainless steel is safer. These sustainable materials don’t leach harmful chemicals, they stand up to high temperatures, and they last a long time, making them a better investment for both your family and the planet.
If you’re still feeling overwhelmed by the choices, start small. And remember—there’s no “perfect” choice. What matters most is finding bottles that fit your baby’s needs and your family’s lifestyle.
As conscious parents, we are constantly balancing what works for today with what protects our children’s future. Whether you choose the best glass baby bottles with anti-colic vent systems or a sturdy stainless steel option with sippy caps for later, know that you are making a meaningful difference. Every safe sip your baby takes is a reflection of your love and dedication.
So take a deep breath, mama—you’re doing an incredible job. With so many wonderful friendly baby products available today, you can feel confident that the feeding choices you make are nourishing not just your little one, but also the world they’re growing up in.
Latest on the blog
