A Review of the Kiinde Breastmilk Storage System

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I was in the process of doing research on how to store breast milk and what was available in the market when a friend of mine gifted me the Kiinde Kozii Breastmilk and Bottle Warmer. This is probably the most expensive purchase in the system, so I began to look into the company’s products. This post will not be covering a comparison of other systems because I didn’t get to try them. Below, I’ll be covering the advantages and the disadvantages of the system based on my experience.

The Verdict

Worth it! Especially if you’d like to continue the journey of pumping and storing milk. The initial investment of the system may seem pricey, given that you’re purchasing the bottle warmer, adapters, milk organizer (optional), but the 6 oz pouches are fairly affordable on Amazon.  

Product Tip: Amazon offers the Kiinde Starter Kit. I’ve seen a price difference of up to 75% between Amazon and Kiinde’s official site. I order the twist pouches on Amazon as well. They seem to constantly offer promotions and are less expensive than Kiinde’s official website.


  • Convenient and Thoughtfully Designed: True to its advertisement, milk transfer from pumping to feeding is *minimal or non-existent. I pump breast milk directly into the Kiinde Twist Pouch, freeze it, thaw it when I need it and use the same pouch to feed baby. The sleeve/case makes it easy to handle the pouch when warming the milk and feeding baby. The adapters are extremely helpful – this means that you can keep any nipple that baby prefers without having to purchase Kiinde’s brand of nipples. Kiinde’s Kozii bottle warmer raises the water’s temperature gradually so as not to overheat the breast milk like steam bottle warmers can. It is capable of warming milk even from a solid frozen state.
  • Sturdy Pouches: I haven’t experienced a busted bag yet in the last 5 months of using this.
  • HSA and FSA eligible purchase


  • Measurement accuracy: Inaccuracy in reading the volume may occur depending on how the pouch is expanded. If not expanded appropriately, it’ll show that you have more milk than what’s actually in the bag.

*Note: To expand on the “minimal transfer” discussion, here is why I say that: My 5 month old baby who is exclusively drinking breast milk can consume 4-8 oz per feed. There are times when I can only pump 2-3 oz at a time. To save on warm-up time and Kiinde pouches, I pump into a bottle and consolidate the milk with what I’ve pumped into a Kiinde pouch until I reach 4-5 oz per bag. For moms whose babies consume less, it may be a good idea to keep smaller portions to lessen excess milk waste that baby doesn’t consume. I know how hard it is to be a pumping mom! Please follow the guidelines on adding freshly pumped breast milk to refrigerated breast milk or frozen breast milk. There are articles on this subject available online.

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One Comment

  1. What I Wish I Knew Then About Breastfeeding

    […] I fed baby on demand. Our bodies are very much like factories… If baby doesn’t nurse as much, supply goes down. I began pumping and storing 4 oz a day of milk at week 6. I froze my milk, labeling each one with the amount, date and time that I pumped. I highly recommend using the Kiinde Twish. They do take up a little bit of room, so be ready to make room in your freezer. If you’re interested in the Kiinde System, refer to my post on “A Review of the Kiinde Breastmilk Storage System“. […]

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