Toyvian 4pcs Ice Packs for Lunch Boxes: Reusable Ice Packs for Cold Chain Transport - Small Freezer Blocks for Coolers Travel and Beach, Camping & Fishing Outdoor Activities

["HIGH-PERFORMANCE EXTENDED COOLING】 Designed with advanced cooling technology, these 6.3in ice packs allow rapid temperature reduction. The ice blocks maintains a stable cold environment for extended periods, making them the best ice packs for lunch boxes","MIDDLE VERTICAL DESIGN & SPACE SAVER】 The middle design makes these reusable freezer packs easy to carry and store. Their tall, compact shape fits perfectly in the side of a lunch bag, small cooler, or backpack without crushing your food","SECURE REFILLABLE COLD CHAIN SOLUTION】 These refillable ice blocks for cooler use are ideal for cold chain logistics and grocery . Simply add water to create a leak-proof ice box pack that keeps seafood and cakes fresh during long-term transport","VERSATILE & FLEXIBLE COMBINATION】 Includes 4 pack ice pack units that can be used individually or together. Adjust your cooling capacity based on your specific requirements, from kids' school lunches to large outdoor coolers and picnics","DURABLE PE & REUSABILITY】 Made of heavy-duty PE, these blue ice packs coolers accessories eliminate the need for one-time use ice. These reusable cooler pack lunch box inserts are stable, and reduce waste in your daily"]