Reusable cooling solution - Delivers a strong cold supply with high-capacity thermal storage and provides an extended reusable cooling insert for air conditioning applications through robust crystal expansion and reliable ice pack reuse. Smart Fill Technology - Features a container-safe fill guide and overflow instructions to ensure balanced water-absorbing expansion during the freezing phase. - Developed with a thoughtful expansion framework to deliver dependable cooling performance and long-lasting results. Enhanced cooling performance - Provides a notable boost in cooling through evaporation-assisted cooling with crystals compatible with air cooling systems. - Delivers excellent cold retention and sustained cooling effects across repeated use as a reliable cold source. Easy setup - Optimized for cooling lunch bags with a user-friendly freeze-activation mechanism and crystal integration. - Includes a practical, reusable ice pack set for simple, everyday use. Use scenarios - Lunch on the go: Keeps meals fresh and drinks cold for work, school, or daily commutes. - Travel and outdoor activities: Ideal for picnics, road trips, and camping to maintain cold items without frequent replacements. - Temperature-sensitive items: Suitable for medicines or other items that require stable cooling during travel or daily routines.