1. Stable Medication Temperature - Insulated cooling and heating function maintains temperature stability for medications and breast milk. - Provides effective 6-8 hour temperature retention for foods and drinks. 2. Versatile Use - This universal bottle carrier is designed for commuters, picnics, and camping trips, combining stylish design with practical utility for everyday travel and family activities without adding extra weight. 3. Portable Mobility Design - Removable shoulder strap for flexible carrying options, allowing hand-carry or shoulder-carry. - Easy transport with a carrying handle and an adjustable, wide strap for comfortable, adaptable carrying styles. 4. Leak-Proof Technology - Enables cold-pack safe storage with reduced heat loss. - Innovative leak-proof design with a reverse-locking function for reliable performance during daily liquid intake. 5. Use Scenarios - Daily commuting with medications and breast milk. - Outdoor activities such as picnics and camping trips. - Family travel and everyday errands requiring temperature control and easy portability.