OPTICOOL BACKPACK COOLER

Does the job

I bought this cooler to take on my cruise. I wanted to test it out before using it. I put 4 beers and 2 bottles of water with ice. I sat it on the porch in full SC sun. At the 4 hour mark I had quite a bit of water ,but still had some ice keeping the drinks cold. There was no leaking but a little condensation on the bottom. This will not replace a regular cooler to take to the beach, but works for my needs.