EASY TO CARRY Lightweight and compact design fits neatly in a backpack and takes up minimal space. Ideal for keeping lunch cold on the go and during commutes or school days. EASY PREP Use the water filled ice pack and freeze for 24 hours in a standard freezer. This reliable pre cooling method helps you consistently control the temperature of your lunch box. EXTENDED APPLICATIONS Designed for breast milk and food cooling, with expanded use in logistics cooling and as an auxiliary cooling option for air conditioners. A user friendly cold storage that balances safety and effectiveness for daily cooling needs and precise temperature control. KEY ATTRIBUTES Function: portable cold storage for food, breast milk, and small items; maintains cold conditions with a pre frozen ice pack. Compatibility: works with standard freezers for pre freezing; suitable for breast milk storage, food cooling, logistics cooling, and auxiliary cooling for cooling systems. Size and portability: compact and lightweight; backpack friendly for easy transport. Performance: reliable temperature control through a pre frozen ice pack, supporting everyday use and temperature sensitive storage. USE SCENARIOS At work or school: keep meals cold until lunch time. Travel with an infant: transport breast milk safely during outings. Small scale logistics or temporary cooling: support of perishable items or provide auxiliary cooling for cooling units and temporary cooling needs.