Portable and easy to carry: slim profile and lightweight design slip into any bag or lunchbox so you always have reliable cooling on hand. Durable reinforced PE construction: strengthened polyethylene material provides long-lasting stability and resistance to cracking, suited for regular daily use. Consistent cooling performance: advanced ice-crystal formulation with high expansion capability maintains cooling power over time for evenly chilled food and drinks. Versatile applications: effective for storing breast milk and food, for cold transport, and as part of portable cooling or fan-related setups. Stable material properties support continuous use in different situations. Practical compatibility: compact shape fits into lunchboxes, cooler bags, and insulated carriers without adding bulk; suitable for repeated freezing and thawing cycles. Problem solved: keeps perishable items at safer temperatures during commutes, workdays, school, or travel, reducing spoilage and maintaining freshness. Use scenarios Daily lunchbox cooling: Place the pack in a lunchbox to keep meals and snacks chilled until lunchtime without taking up much space. Breast milk transport and storage: Maintain safe, stable temperatures when carrying expressed milk between home, daycare, or work. Short-distance cold transport: Add to insulated bags when transporting groceries, meal deliveries, or temperature-sensitive items for short trips. Specifications and performance notes Material: reinforced PE (polyethylene) for enhanced durability and break resistance. Function: reusable cooling pack with stable cooling effect provided by high-expansion ice crystals. Recommended use: freeze before use; suitable for repeated, everyday use in lunchboxes, insulated bags, and similar containers. What makes it stand out Combines a slim, lightweight form factor with reinforced materials for both convenience and longevity. Designed for consistent, reliable cooling across multiple everyday scenarios without compromising portability or durability.