Bests & Worsts Reviews from Amazon

Been using these for about a year now and bought them directly from CoolerShock.com. I just purchased another 3 about two weeks ago and they are the same as before. Keep frozen food frozen and drinks will be icy cold to the point you can't hold them in your hand. I don't recommend having beverage cans in direct contact with them as you will get ice in your drink and that is not so good with beer. Bottled beverages seem to not get frozen, but still very cold. I use these in conjunction with my two Pelican coolers. One is a 45qt unit and the other is the newer 20qt unit. The 20qt cooler I keep in the back of my truck 24/7 and travel with it anywhere I go. I'll use the Cooler Shock packs for the first couple of days and then resort to cubed hotel ice if I need to stay longer than 3 days. With the combo of the Pelican coolers and the Cooler Shock ice packs, I can't ask for anything better for week long outings to keep things cold in the cooler. Great product as long as you allow them to freeze for two days prior to using. It is also best to make sure they are laying flat as possible in the freezer so they will fit better in the cooler you are going to put them in. Crinkled up ice packs don't fit well in a cooler when space is at a premium while packing said cooler. Overall, great product and easy to fill and close using a hot iron. Just make sure ALL the air is out before sealing them shut. They fit the Pelican 20qt Cooler very well and the photos show the ice pack after 4 days and sitting atop ice. Makes ice last that much longer.