Glass, bottles are constantly being heated and it casuses the plastic to break down over time. Glass is better for the environment, and baby, you can also get bottles made out of stainless steel, and sleeves to protect glass baby bottles.

The bottles I use are made mostly of hygienic and safe silicone. I LOVE the Comotomo bottles ❤️

i’ve seen the kids i nanny THROW their glass bottle across the room on hardwood floors and they have never broken. 👍🏻 good enough evidence that i’ll be buying glass when this lil nugget is born!