Bests & Worsts Reviews from Amazon

I love these and own literally tons of them for my Yetti coolers. They need two days (or longer) in the freezer but if you line a quality cooler like Yetti, Pelican, etc. with these they will keep frozen for 2-3 days which is impressive. Filling them with water and sealing is simple. I have friends who returned them afraid that they would mess it up but its literally the simplest thing ever. Update: I purchased these exactly one year ago, the bags are now falling apart. I didn't use them very often, I would guesstimate on a cumulative basis maybe 5-6 months total. All the bags are now deteriorating, and the gel/water mix has leaked out of some. Most of the bags delaminated (see pictures) and once the clear protective film is gone, that's when they puncture easily. The alternative is traditional hard plastic cooler ice, which seems like it would last longer but they take up a lot of cooler space and don't freeze as fast as Cooler Shock.