Nordic Ice NI48 Reusable Long-Lasting Gel Pack, 48 oz. (Pack of 12)

I love these ice packs but they do leak eventually. Luckily so many came in a box that it's not an issue yet.Edit: I'm still using these packs and have been buying them from a restaurant site. I just bought a new box last week. Unfortunately, this is the second one that has busted on me and soaked my belongings in a week. They used to be way stronger but I see that the packaging is different and they appear to be even weaker. I'm bummed because they have been a lifesaver and now I have to find something else.

Works well keeping items cold and the gel bags stay frozen for quite awhile!