Fit & Fresh Cool Coolers Slim Reusable Ice Packs for Lunch Boxes, Lunch Bags and Coolers, Set of 8, Blue PERFECT SIZE: Ideal size for everyday use. Each ice pack measures 4.75" x 4.75" x 0.25" KEEPS FOOD COLD: Includes 2 sets of 4 reusable, non-toxic, BPA-free ice packs (a total of 8 ice packs) CONVENIENT: Fits into all types of lunch bags, lunch boxes, coolers and grocery totes SLIM DESIGN: Great for using in tight spaces or stacking several together for greater cooling power CARE TIPS: Hand wash only. Do not microwave