Long time+ Extended Cooling Technology: Say goodbye to spoiled milk! The innovative 360° surround cooling tube of our breast milk cooler bottle maintains a consistently cold temperature for long time, keeping your liquid gold fresh and nutrient-rich - perfect for long workdays, road trips, or outdoor adventures Easy to Use, No Extra Ice Needed: Simply freeze the cooling tube in the refrigerator (around 0℉) for 12 hours (adjust as needed), into the cooler, and you're ready to go! No messy ice packs or last-minute scrambling Big Capacity & Organized Storage: Designed for real , the portable breast milk chiller use two separate bottles to up between fresh and chilled milk. The breastmilk cooler produces zero waste while ensuring your baby gets the freshest milk possible, perfect portioning for multiple pumping sessions Easy Cleaning & Works with Most Nipples: The inner bottles are made of food-grade material, you can just clean it with dishwasher or bottle washer for ultimate convenience. Besides, you'll Love how versatile this breastmilk cooler bottle is! Just remove the cap and attach your favorite nipple directly - no need for extra bottles. Super convenient for switching between storage and feeding. NOTE: Nipple is NOT included. Compatible with nipples within 1.97inch diameter. Travel-Friendly Design: -compliant for convenient air travel, working, outing. The breastmilk cooler is compact enough for your work bag or diaper bag. Ditch the bulky ice packs - everything you need is in one sleek package Color: Green Material: PP+Stainless Steel Package Contents: 1 * breast milk cooler bottle 2 * baby bottle 2 * cooling tube Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.