TOURIT Ice Packs for Coolers Reusable Long Lasting Freezer Packs for Lunch Bags/Boxes, Cooler Backpack

These long and narrow squared off Tour It ice packs work great as they can be grouped together or distributed into nooks and crannies so they tilt, lay flat and so on. This size works well for my small and medium insulated bags and ice chests, and one can even fit tilted in a regular brown lunch bag. I think how long these stay cold depends on factors like how many are used, the weather, insulation, etc. But these are narrow and we tend to use them for transporting food to a family member’s home in hot weather, etc.I just leave these packs in the freezer to use as needed. These are filled with some type of gel or liquid (not sure which), and none in my set of 8 has leaked after many uses. These are easy to wipe clean as needed. The plastic is thick, and these ice packs look and feel really durable. I think a lot of these would be needed for a large chest if it’s all you’re using to keep food cold, so it’s better to have a mix of larger blocks or ice too. I’ll be buying a second set, and definitely recommend these ice packs. Love this product. 5 stars.