Improved Thermal Storage Support: capacity thermal storage combined with coarse crystal technology delivers strong coldholding performance and reusable cooling that stays effective across multiple uses without degradation. Adaptive Freeze Expansion: Includes a containersafe fill guide and no overfilling instructions, enabling controlled water absorption during freezing for ideal freezing phase adaptation. An expansionallowance feature supports hydrationtriggered volume growth to enhance overall performance. Efficient Cooling Solution: Innovative crystal technology optimized for evaporative fan cooling systems provides consistent chill improvement and sustained cold retention over multiple uses without compromising performance. Effortless Setup: Optimized for lunch bag cooling needs, featuring a user friendly freeze activation mechanism and integrated cooling crystals, delivering a practical and reusable ice pack replacement for everyday use. Use scenarios For school or work lunches in a standard insulated bag to keep perishable foods fresh during commute or daylong outings. For picnics, road trips, camping, or travel in compact totes and small coolers where a compact, reusable ice pack is preferred over disposables. For keeping beverages cold or supporting temporary cooling needs during errands, events, or power outages when freezer access is limited.