Glass Baby Bottles 5oz 4 Pack: Daily Use and Care FAQ

Everyday warming and cleaning questions

Can I warm these bottles in the microwave?

No. Lansinoh does not recommend heating breastmilk or any liquid for a baby in a microwave because microwaves can create hot spots and damage breastmilk nutrients. Instead, warm the milk in the bottle or a storage bag using a container of warm water, then transfer to a bottle if needed.

Are the bottles and nipples dishwasher safe?

Yes, both are dishwasher safe on the top rack only. To extend the life of the NaturalWave Nipple, gentle handwashing is recommended. You can also soak nipples in warm soapy water, rinse and air dry.

Can I sanitize the bottles and nipples by boiling?

Yes, both the bottles and NaturalWave Nipples can be sanitized by boiling in water. Make sure there is ample water in the pot so no parts touch the bottom or sides, which could cause melting.

How should I clean the nipple without damaging it?

A nipple brush can be used if necessary, but be gentle and do not poke the brush through the hole. The hole is very small, and poking can compromise the silicone.

Nipple flow and feeding questions

Which flow speed should I start with for a newborn?

Lansinoh offers three flow choices because one type does not work for all babies. The available options include Extra Slow (Newborn) and Slow Flow. The slow-flow nipple is marked “Size 2S” on the bottom rim, medium is “Size 3M”, and fast is “Size 4L”. Your baby’s preference often relates to how they feed at the breast, so you may need to try more than one.

How can I tell the flow sizes apart?

Look at the bottom rim of the nipple: slow-flow reads “Size 2S”, medium-flow reads “Size 3M”, and fast-flow reads “Size 4L”. This makes it easy to grab the right one, even when you are tired.

What is the Air Ventilation System (AVS)?

The AVS is designed to reduce the intake of air, which is a potential cause of colic and spit up. It is one of the features that sets the Lansinoh bottle apart.

Handling and drop protection

How can I protect glass bottles from drops?

The supplied information does not include a specific drop-protection accessory or test result for these bottles. In daily use, handle them carefully, avoid knocking them against hard surfaces, and store them where they won’t roll off counters. Always check the bottle for chips or cracks before each feed, and stop using it if damaged.

Are these bottles BPA and BPS free?

Yes, both the bottle and the nipple are BPA and BPS free. The bottle is made from polypropylene plastic, which is chemical, additive, and BPA-free. The NaturalWave Nipple is 100% silicone.

Product facts for the 5oz 4 Pack

• Glass Baby Bottles 5oz (4 pack): Lansinoh Glass Baby Bottles 5oz (4 pack) feature the NaturalWave Nipple, which is clinically proven to reduce nipple confusion. Supports a smoother transition between breast and bottle, a key concern for breastfed babies.

  

• Glass Baby Bottles 5oz (4 pack): The wide neck allows pumping, storing, and feeding breastmilk without transferring between containers. Simplifies your routine and reduces milk waste.
• Glass Baby Bottles 5oz (4 pack): The bottle and nipple are dishwasher safe on the top rack only; handwashing is recommended to extend nipple life. Helps you choose a cleaning method that balances convenience and longevity.
• Glass Baby Bottles 5oz (4 pack): The Air Ventilation System reduces air intake, a potential cause of colic and spit up. May help reduce feeding discomfort for some babies.