Larger, thicker and longer lasting Cool Coolers reusable ice packs by Fit & Fresh are great to have on-hand for school, work, camp, beach days, tailgate parties and picnics. The versatile shape is perfect for lunch boxes and coolers of all sizes. The set includes (4) rectangular ice packs. Each pack measures 7" x 4.5" x 0.50". The larger, thicker size means that your food and drinks will stay cool and fresh even longer. For greater cooling power, use several packs together, especially on extra hot days. The versatile shape also allows you to pack ice on the bottom and sides of your lunch bag/cooler without taking up lots of space. Do not microwave. BPA Free,