







Product description



1 720° Vacuum-Sealed Design
2 Longer Cooling Below 40℉
3 Chill Faster Than Fridge
4 Flexible Chill
5 Extra Wide Opening

1 Supports Every Stage
2 Pump at Work
3 Pump at Night
4 Chill On the Road
5 Dad Duty

1 Thoughtful Details
2 Separate Storage
3 Two Ways of Cooling
4 Food-Grade Materials

1 How to Use?
2 How to Clean?
3 Notes & Tips
4 What‘s in My Box?
What are the dimensions and weight of the cooler?
The cooler’s dimensions are approximately 4.44 inches in diameter × 10.06 inches in height, and it weighs about 3.34 pounds (including the frozen cooling tube).
How long should the ice rings be frozen?
Freeze at -18°C (0°F) for at least 12 hours before use for optimal performance.
The cup body does not require refrigeration and can be stored at room temperature.
How long can breast milk be stored in the cooling cup?
With 4 fully frozen ice rings and the cup kept closed, it can safely keep contents chilled for up to 24 hours.
Actual duration may vary depending on ambient temperature and how often it is opened.
How to clean all parts of the cooling cup?
After each use:
1. Disassemble all parts (bottles, ice rings, silicone parts, cup body)
2. Wash with mild detergent
3. Wipe dry or air dry
4. Reassemble only when fully dry
What is the capacity of the cooling cup?
Total capacity is 22 oz (approx. 660 ml), including two separate 11 oz (approx. 330 ml) bottles, suitable for daily use or multiple pumping sessions.
24+ Hours Safe Chilling: Features an innovative vacuum lid and 720° vacuum insulation to keep breast milk below 40°F for up to 24 hours(Lab Tested), far exceeding other coolers. Meets TSA transport standards. Whether for a day trip outdoors or a long commute, it locks in the nutrition and freshness of breast milk, ensuring your baby can enjoy high-quality breast milk anytime.
Rapid cooling: Four built-in high-efficiency reusable ice rings quickly lower the temperature to the optimal storage temperature of breast milk at 40℉ (approximately 4℃), rapidly locking in the active nutrients. No need for long waits; breast milk can be quickly stored after pumping, preventing nutrient loss due to temperature fluctuations.
22oz Individual Storage Bottles: Equipped with two 11-ounce individual storage bottles, the total capacity is 22 ounces, easily storing 5-6 pumps’ worth of milk, covering the entire day’s milk storage and feeding needs. The individual bottle design allows for separate storage of warm and cold milk, avoiding the risk of spoilage caused by cross-contamination, ensuring every sip is fresh and safe for your baby.
Detachable design: The four ice rings can be separated and used independently. They can be combined for long-lasting freshness, or you can carry 1-2 ice rings with a baby bottle for short trips, significantly reducing the weight when traveling. Whether commuting to work or taking your child to the park, it can easily handle the task, eliminating cumbersome equipment.
Easy to use: Simply freeze the ice crystal ring in the refrigerator for 12 hours to enjoy all-day cooling, no complicated setup required.Unlike other coolers that rely on tilting or pouring to remove the bottle(often leading to leaks or spills), WONDBORN features a flip-top lid design paired with a lift-ring baby bottle. This allows you to lift the bottle out with one hand, helping prevent accidental dripping or mess.
Multiple cooling methods: Not only can the ice rings be pre-frozen to meet the need for long-term refrigeration of breast milk, but for unexpected travel needs, ice cubes can be added for short-term refrigeration. It comprehensively considers the needs of mothers, completely eliminating refrigeration anxiety during unexpected outings.
Safe materials: Made from 100% food-grade, BPA-free and lead-free materials, protects every drop of nutrition for your baby.

Iris Lei –
Hanyue –
Taylor C –
Tonza D. Ruffin –
Blair –
Ashley –
Joyce jiang –
Danie Santa –
KarlaD Urquizo –