WONDBORN 22oz Portable Breast Milk Cooler for Work & Travel, 30H+ Chill | Rapid Chill to 40℉ | 720° Vacuum Cooling | 22oz & 2 Bottles | 4 Ice Rings | Extra Wide Opening

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.

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.

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.

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.

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.