Portable and compact: Small footprint and lightweight design make these ice packs easy to carry and store in a backpack. Perfect for travel and daily outings when you need reliable cooling without bulk. Durable construction: Made from reinforced PE (polyethylene) plastic for high resistance to damage and long service life. Built to withstand repeated use while protecting the cold gel inside. Multi-purpose cooling: Designed for safe transport and preservation of breast milk and for general food cooling. Also suitable for transport cooling and to support fan-assisted cooling systems. The user-friendly design adapts to everyday cooling needs. Long-lasting cold retention: The product’s crystalline gel structure binds cold effectively and maintains low temperatures for hours, keeping meals and drinks reliably chilled. Key features Function: Cold retention packs for preserving breast milk and keeping food and beverages cool during transport. Compatibility: Works in lunchboxes, insulated bags, coolers, and alongside small fans for enhanced cooling. Size and weight: Compact and lightweight for easy storage and portability. Material: Reinforced PE plastic shell for impact resistance and durability. Performance: Crystal gel formula holds cold for extended periods to protect perishable items on the go. Practical applications Nursing parents: Keep expressed breast milk safely chilled during outings, visits to childcare, or while traveling between home and daycare. Commuters and travelers: Maintain packed lunches, snacks, or drinks at safe temperatures during workdays, train rides, or short trips. Outdoor activities: Use in insulated coolers or bags for picnics, sports events, or short hikes to keep refreshments cold for hours. Why choose this product Solves the problem of transporting temperature-sensitive items by offering a lightweight, durable, and easy-to-use cooling solution. Versatile design supports multiple everyday scenarios without the need for electrical power. Reliable cold retention performance helps protect food safety and quality over extended periods. Included: reinforced PE plastic ice packs with crystalline cold gel for portable, repeatable cooling.