Kiinde

Kozii® Baby Bottle Warmer | Top-Rated Breast Milk Bottle Warmer

$74.99

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Named best bottle warmer for breast milk by Consmer Reports, Babylist and Wirecutter (2026) - gently warms bottles, pouches, and formula to body temperature (98°F) without overheating.

Top-rated and award-winning for a reason, the Kiinde Kozii is designed specifically for safely warming breast milk. Unlike traditional bottle warmers that risk overheating, this breast milk bottle warmer uses a gentle water bath to evenly warm bottles and storage bags to 98°F - helping preserve nutrients while giving you total control.

The Kozii is the ultimate solution for warming your baby’s bottles efficiently and safely, ensuring that your liquid gold maintains its nutritional goodness.

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What It Does

Our award-winning Kozii breast milk bottle warmer is time-tested and beloved. Designed for speedy and efficient convective-heat warming, it uses a low-temperature, nutrient-safe water bath to preserve the essential vitamins, minerals, amino acids, enzymes, and white blood cells in breastmilk.

Why You'll Love It

Our patented SafeHeat™ technology makes this one of the best bottle warmers for breastfed babies. It quickly and safely warms breast milk, formula, and purees without hot spots or overheating.

The easy-to-clean warming chamber can accommodate a full 8-ounce bag of frozen breast milk or baby food. Plus, it’s versatile — use it with Kiinde Twist Pouches, reusable or disposable bags, bottles, jars, and containers.

Works With

The Kozii is compatible with bottles, breast milk storage bags, and pouches, this breastfeeding bottle warmer is designed for real-life convenience—whether you’re warming fresh milk or thawing frozen breast milk.

Frequently Asked Questions

Why should I use a Kozii instead of just microwaving or steaming?

The Kozii's water bath is thermostatically controlled to heat milk safely and quickly while preserving nutrients. Studies show that exposure of breast milk to temperatures above 140°F can destroy important antibodies and denature proteins. Steam warmers reach higher temperatures, and microwaves can create localized hot spots within the milk that temporarily spike well above the maximum safe temperature — even if the overall temperature feels safe.

Unlike traditional bottle warmers that risk overheating, the Kozii uses a gentle water bath to evenly warm bottles and storage bags to 98°F, preserving nutrients while giving parents total control. Its patented SafeHeat™ technology warms breast milk without hot spots or overheating.