LeakProof Design The ice packs have a seamless structure made from thickened PE material, offering sturdy durability and easy cleaning while maintaining full function during extended use. Cold Retention Coarse dry ice pellets provide cooling performance with long lasting energy storage, ideal for large cooler capacities and reliable temperature control during extended use. Use at Ease Designed for practical use, these ice packs freeze in just a few hours, expand naturally when freezing, and are easy to prepare for your everyday lunch bag needs. 8 Pack Reusable Ice Packs Selfwatering, reusable ice packs are provided in sets of 8, enhancing air cooler use and delivering extended cooling memory for sustained thermal regulation across multiple uses without degradation. Key attributes Material: thickened PE Pack size: 8 pieces Compatibility: suitable for lunch bags and large coolers Performance: fast freezing, reliable cold retention, reusable and easy to clean Use scenarios Daily lunch bag Keep meals and drinks cold through work or school, helping preserve freshness and quality. Outdoor activities Ideal for picnics, camping, and road trips where long lasting cooling is needed for beverages and perishable items. Home and office cooling Pair with portable air coolers or beverage chillers to extend cooling performance across multiple uses without degradation.