About This ✅ 24H+ Extended Outdoor Cooling:Our breast milk cooler uses 360° surround cooling tube technology to maintain consistently cold temperatures for over 24 hours, preserving milk freshness & preventing nutrient loss during travel, work, or outdoor adventures. ❄️ Ice-Free Cooling Technology:The innovative gel tube eliminates messy ice while delivering reliable cooling. No more leaks or temperature fluctuations—just long-lasting cold retention for safe milk storage. ⏳ Simple & Convenient Use:Just freeze the cooling tube for 12 hours (at 0°F/-18°C) before use, then insert it into the milk cooler. No complicated steps—perfect for busy moms on the go. 🚿 Hassle-Free Cleaning:Designed for easy maintenance: rinse under water and reuse. Note: Do not sterilize, boil, or dishwasher clean—gentle care ensures long-lasting performance. 🤱 Compatible with Ceres Chill & More:Fits most breast milk cooler bottles (like Ceres Chill), offering versatile, leak-proof cooling for pumps, bottles, or storage. (Includes 2 gel tubes for backup or rotation.)