Keeps food and drinks cold for hours: Coarse ice-crystal particles inside the pack expand when frozen to form a dense cooling mass, delivering steady, long-lasting chill to lunches and beverages. Durable construction: Made from thickened PE material for higher puncture and tear resistance. Designed for repeated daily use without cracking or leaking. Compact and portable: Slim, lightweight profile makes the pack easy to slip into a lunch box, cooler bag or backpack without taking up much space. Simple to use: Fill with water to activate the internal ice crystals, then freeze for about 2 to 4 hours. Ready to place directly next to food or drink items to maintain low temperatures. Key attributes Function: reusable ice pack that expands internally into coarse ice crystals for improved cooling performance Material: thickened polyethylene (PE) for durability and tear resistance Performance: reliable, long-lasting cooling efficiency suitable for multiple uses Size/compatibility: small profile designed for convenient placement in lunch boxes, cooler bags and backpacks How this solves problems Prevents food from warming and spoiling during transit Keeps cold items at a safe, enjoyable temperature for longer periods Reduces need for single-use ice or constant refrigeration while commuting or outdoors Typical use scenarios School or office lunches: place next to sandwiches, salads or drinks to keep meals fresh until lunchtime Picnics and day trips: use in a cooler bag to maintain chilled snacks and beverages throughout the afternoon Commuting and travel: carry in a backpack or tote to preserve packed meals during the day How to use 1. Add water to the pack to activate the internal ice crystals. 2. Place in the freezer for approximately 2–4 hours. 3. Put the frozen pack alongside food or drink in your lunch box or bag. Note: Inspect the pack before each use for signs of damage. Replace if punctured or leaking.