The Mason Bottle DIY Kit includes everything you need to convert your own regular mouth mason jars and metal rings into easy to clean, cost effective glass baby bottles.
Save yourself the cost and clutter of buying a full baby bottle system, and just leverage your jars instead.
2 Slow Flow Silicone Nipples
1 Silicone Sleeve ( either 4 oz or 8 oz )
1 Cap for Metal Mason Jar Ring
*Jars are NOT included & just shown for context
Milk flows smoothly with no air bubbles and no leaking
Dual-valve FussFreeTM ventilation system to help prevent gas and colic
Wide, breast-like design support breastfeeding
Easy to clean & dishwasher safe
Non-Toxic, BPA and BPS free
Approximate volume markings on sleeve
100% Satisfaction Guarantee
With most brands, if your baby doesn't take the nipple, there's no returning the bottle. But at Mason Bottle, we never want parents to have to worry about this.
We are the only bottle brand with an extended return policy, and no condition requirements - allowing you to return used or unused products for any reason.
Wide Breast-like Design Supports Breastfeeding
Milk Flows Smoothly with No Air Bubbles and No Leaking
Fits Any Regular Mouth Mason Jars
Built-In FussFreeTM Ventilation
All of our nipples are designed with our FussFreeTM Ventilation System.
This dual valve system allows air to be taken in and milk to flow smoothly out with no air bubbles to help prevent gas and colic.
Bonus: Our system is flawlessly built into the top of the nipples, so no special tubes, collars, bags or extra pieces needed!
100% Made in the USA
Being made in the USA means that we have 100% certainty that our factory is using the safest, best quality materials available. We know that all our products are being made in a clean environment that meets the highest standards around.
Breast-Like Shape and Flow
The wide design helps ensure a breast-like latch. Our nipples are designed to flow smoothly and smoothly to mimic the pace of breastfeeding.
Lactation Consultants recommend always using the slowest flowing nipple your baby will accept to promote a smooth transition from breast to bottle and back.
Easy to Clean
All components of the DIY kit (and your jars!) are top-rack dishwasher safe! No dishwasher? No problem! The wide mouth design allows for easy cleaning with no brushes or extra tools needed.
If you’re buying the DIY Kit, then you already have jars at home, and you probably already know this, but the metal rings and lids on mason jars can rust over time. We recommend hand washing and thoroughly drying your mason jar rings to extend their lifespan.
What Jars Can I Use?
No matter the brand, our DIY Kit is made to fit any regular mouth mason jar. While the nipple and cap will fit any size jar, the silicone sleeve will only fit either a 4oz or an 8oz jar.