Precision fill design - Includes a container-safe fill guide that directs overflow, regulating water-absorbent expansion and enabling safe adjustment during the freezing phase - Features a reliable expansion structure that supports hydration volume enhancement and a built-in shutoff for safe operation Enhanced cooling performance - Delivers an improved evaporative cooling boost with crystals compatible with air-cooled systems - Provides excellent cold retention and long-lasting cooling effects during repeated use, serving as a dependable cold source Convenient use - Ideal for lunch bags; designed for easy activation and use with lunch-bag storage - Uses advanced cooling crystal technology to offer an efficient self-prepared ice pack function while delivering consistent and convenient cooling results Broadly versatile - A cooling solution for camping, travel coolers, and portable air coolers - Provides safe cold options for food and breast milk with portable, reusable ice packs in multiple configurations Use scenarios - Keep school or work lunches cold in a lunch bag for hours - Maintain beverages and perishables on camping trips or road travel - Safely store expressed breast milk or temperature-sensitive items during outings and daily activities