Bought 6 of these and keep them in the freezer, ready to go.
I pair these with my Igloo rolling cooler foe use when grocery shopping.
I place these in the cooler when I leave the house for a grocery shopping trip. By the time I am thru shopping, the inside tenoerature of the cooler has dropped quite a bit, which helps keeps the perishables fresher longer.
I am always amazed at how much the cooler holds and how well it keeps items cold.
I would call this "very light" use, and expect that the cooler and ice.packs will last a very long time.
This ice block fits nicely in a 7qt cooler. Even though I did lay it flat in the freezer it still bulged from the middle a bit when frozen. I put it in with my lunch in a 7 qt cooler for a day trip. The cooler was in my car for about 5-6 hours and my lunch was still cool, but the ice block wasn’t really frozen anymore. Would give a better rating if it didn’t bulge and would last frozen just a smidge longer.