Two Birds

FAQ Baby Bottles

Glass is the safer choice for baby bottles: Unlike plastic, it can’t leach chemicals into milk or juice (including BPA/BPS). Unlike plastic, it doesn’t scratch—and scratches can harbor bacteria. Glass is also the greener choice: It’s reusable and recyclable—plastic bottles typically end up in landfills when their useful life is over. Finally, with glass there’s no unpleasant plastic or metallic taste.

The all-natural rubber nipples, along with the plastic ring, cap, seal, and anti-colic double-valve, are all made exclusively in Italy.
Our borasilicate glass bottles are made in France.

The plastic parts are all made from PP with is short for polypropylene.

We continuously search new options as we to aim at being as plastic free, ecofriendly and biodegradable as possible but so far this is the best we can do.

Boil or run the bottle through the dishwasher initially to sterilize. All parts – except the natural nipples—are dishwasher-safe. (Of course, they can also be handwashed.) Nipples should be sterilized for 5 minutes initially in boiling water.

The glass bottle, cap, ring, seal, and double-valve are all dishwasher-safe—or can be hand-washed. The natural rubber nipple should be hand-washed under cold, running water using a mild liquid soap—not in the dishwasher.

Our glass baby bottles and plastic parts are all microwave-safe. The natural rubber nipple is not. So please remove the nipple and plastic cap when microwaving.

One note: It’s difficult to heat liquid evenly in a microwave. However, if you do choose to microwave, we recommend shaking the liquid after heating to eliminate any hot spots, then testing the temperature on your wrist.

“Thermal shock-resistant” means the glass is stronger and can withstand extreme temperature-changes (from boiling to freezing) without breaking. Our bottles are made with pharmaceutical-grade borosilicate glass, which is more expensive, purer, and higher-quality than most glass baby bottles, which are made with soda lime. For mothers who pump and store breast milk, our bottles can go from freezer to refrigerator to hot water, all in one step.

At Natursutten, we take infant safety very seriously. All Natursutten products go through very thorough testing by ConsumerLab in Denmark. Our bottles and nipples are in compliance with European requirements EN14350 and CPSIA 2008, and 16 CFR 1500 in the U.S.

Yes, our bottles have an anti-colic “double-valve” designed to ensure a more even milk-flow and prevent colic and gas—making feeding go more smoothly.

Our nipples are made of 100% natural rubber from the rubber tree Hevea brasiliensis. They are made right alongside our Natursutten pacifiers, in our production facility in Italy.

Our nipples are available in two types: Slow-Flow and Fast-Flow, both sold separately in 2-packs.

Flow rate is determined by the size of the opening: Our Slow-Flow nipples have a single hole, and our Fast-Flow nipples have a Y-shaped hole. It’s easy to tell the difference. (And, of course, the packaging is marked differently.)

Yes, any standard-size nipple will fit on our bottle. However, wide-neck nipples will not fit.

Yes, our natural rubber nipples fit any standard-size baby bottle. They do not, however, fit wide-neck bottles.