Milkbar Original Suction Kit


Sizing is important when it comes to comfort and effectiveness during pumping. While we try to provide the most 'common' sizes with the breast pumps, sometimes a different size is required.

For a quick ruler guide Download our Suction Kit Sizing Guide here. This can be printed and used to assist you find your best fit.

Signs you might need a larger size:

  • You are unable to centre your nipple i.e have it inside the tunnel without it touching the sides
  • You feel your nipple is uncomfortable and rubbing against the side of the nipple tunnel during pumping
  • Your nipple is unable to move freely with the pumping motion
  • Your nipple is being strongly compressed by the 3 phase motion to a feeling of discomfort or pinching

Signs you might need a smaller size:

  • An excessive amount of your areola is being drawn into the nipple tunnel
  • You experience a painful tugging feeling
  • Your nipple is reaching the end of the nipple tunnel while pumping
  • You can hear air moving or 'sucking' inside the nipple tunnel
  • You are not experiencing compression of the nipple with the 3 phase motion
Sizing Guidelines
We recommend having 2-4mm of space surrounding your entire nipple for optimal fit. You can find your size by measuring the diameter of the base of your nipple, then adding 4-6mm to find the nearest size, if between sizes, it is recommended to go for the larger size.


15mm diameter base of nipple, add 4-6mm, nearest = 22mm

20mm diameter base of nipple, add 4-6mm, nearest = 25mm 

23mm diameter base of nipple, add 4-6mm, nearest = 29mm (this size is only available in our all-in-one kits at this stage)

What's Included

Full Kits
Our Milkbar Suction Kits are all compatible with our Milkbar Breast Pumps. The kit comes with all the parts you need to get pumping! 

Please note these kits are sold singularly - if you have a double pump you will need to purchase 2x kits to make a set. 

Do I need anything else?

The original design kits have a traditional valve with membrane flap (pictured below). From time to time (depending on frequency of use and cleaning) these will need replacing to maintain optimal suction and are available to purchase here for $4.99.

Customer Reviews
4.2 Based on 9 Reviews
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78reviewers would recommend this product Write a Review Ask a Question

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New Zealand New Zealand
I recommend this product

Great kit

Bought these to have as extras for the electric breast pump bundle as I found I was going through the other two lots quite quickly. Would recommend to others.

Natasha A.
New Zealand New Zealand
I recommend this product

Love it!

Suction is comfortable and not painful at all. I used another pump before this and I was in a lot of pain. I was almost going to quit pumping but thank god i switched to milkbar. I am able to pump for my baby boy without any pain and plan to pump for at least 6-8 months. Highly recommended!

Australia Australia
I recommend this product


The silicone insert makes it feel like Im just breastfeeding directly.