PPSU, PP, Glass or Silicone: Which Baby Bottle Material Is Right for You?
Baby bottles can look the same on the shelf, but they are made from different materials. The material changes how heavy the bottle is, how it handles heat, and how it looks after months of washing. Here is a simple comparison.
Why the material matters
A bottle is washed, sterilised and handled many times a day, often for more than a year. A material that handles that well stays clear and easy to clean. One that does not will look cloudy and tired within months. It is worth choosing on purpose.
The four common materials
PPSU
PPSU is a strong plastic used in many premium baby bottles. It is light, tough, and handles high heat, so it copes well with steam or boiling sterilisation. It also resists clouding and staining better than ordinary PP.
- Good for: daily use, travel, and parents who sterilise often.
- Trade-off: it costs more than PP.
PP
PP is the most common and most affordable bottle plastic. It is very light and easy to find. After repeated heating and washing, it can turn cloudy or pick up stains and smells.
- Good for: a smaller budget, or a bottle you will replace often.
- Trade-off: it has a shorter good-looking life than PPSU.
Glass
Glass does not stain and does not hold smells. It is easy to see through when you clean it. It is also heavy, and it can break if dropped.
- Good for: feeding at home, and parents who prefer to avoid plastic.
- Trade-off: the weight and the break risk, especially when travelling.
Silicone
Silicone bottles are soft and squeezable, which some parents prefer. The material can hold on to smells or stains, and the soft body makes measuring a little harder.
- Good for: parents who want a soft, flexible bottle.
- Trade-off: fewer designs, and it can absorb odours.
Quick comparison
| PPSU | PP | Glass | Silicone | |
|---|---|---|---|---|
| Weight | Light | Very light | Heavy | Light |
| Break risk | Low | Low | Can shatter | Very low |
| Heat tolerance | High | Moderate | High | High |
| Staining or clouding | Resists well | Can cloud or stain over time | Resists well | Can hold odour or stain |
| Typical price | Mid to higher | Lower | Mid | Mid to higher |
| Best for | Daily use, travel, frequent sterilising | A smaller budget or short-term use | Home use, parents avoiding plastic | Soft, squeezable designs |
This table shows general differences. Performance varies between brands, so always follow the care instructions that come with your bottle.
How to choose
- Sterilise often or travel a lot? PPSU is light and handles heat well.
- On a tight budget? PP is a practical choice.
- Prefer to avoid plastic? Glass works, but plan for the weight.
- Want something soft to hold? Try silicone.
Whatever you pick, choose a brand you trust, with clear labelling and care instructions you can follow.
Where Farlin fits
The Farlin PPSU Wide Neck Feeding Bottle is made from German PPSU, and is free from BPA and harmful chemicals. It is heat resistant up to 180°C, so it handles daily boiling, steam sterilisation and microwave sterilisers without warping or discolouring.
The wide neck makes it easier to fill, pour and clean, and the clear measurement markings are easy to read during a night feed. It is lightweight but built to survive the daily drops and bumps that come with a baby learning to hold their own bottle.
Common questions
Is PPSU safe for babies?
PPSU is widely used in baby bottles as a food-contact material. The Farlin PPSU Wide Neck Feeding Bottle is free from BPA and harmful chemicals. As with any bottle, follow the instructions that come with the product.
Can I sterilise a PPSU bottle?
Yes. The Farlin PPSU bottle is heat resistant up to 180°C and is made for daily boiling, steam sterilisation and microwave sterilisers. Clean and sterilise it before the first use.
When should I replace a bottle?
Replace any bottle that is cracked, badly scratched, very cloudy or hard to clean. Nipples wear out sooner than bottles, so check them more often.
This article is for general information only and is not medical advice. For questions about feeding your baby, speak to your paediatrician or healthcare provider.