Klein Tools 62811 Reusable Ice Packs for Cooler Bags and Lunch Boxes, Interlocking Design, Heavy Duty for Daily Use, Quick Freeze, 2-PackVERSATILE ICE PACKS: Reusable ice packs are ideal for a variety of uses including lunch boxes and coolers LONG LASTING: When frozen for at least 6 hours, ice pack will stay cold for hours FOOD SAFE: Ice packs are made with 100 Percent BPA free non toxic materials REUSABLE: Set of 2 ice packs are 7 x 5. 25 x 1. 5 Inch (17. 8 x 13. 3 x 3. 8 cm) each and the unique shape helps to quickly freeze so they can be used repeatedly STRONG AND DURABLE: Ice packs