Instead of high jacking the "dry ice" thread, I though I would start my own. I have 2 of the Yeti coolers. Before buying them I was like " there's no way I'll spend that much on a cooler". But after buying my first one, I changed my mind. I have the Tundra 50 and the Roadie 20. These are awesome coolers. Every time we go to the lake, which is a lot, I put ice in them once and that's it. Everybody else is putting ice in theirs daily. It's so nice not have to go to the store to buy ice. Now I know that everybody has their own opinion, but mine is the Yetis are one of the best. I know there are others out there, Grizzly, Engel, etc. I have not owned any of these so I cannot compare. My brother states his Coleman will hold as just as long, but it doesn't. I'm not saying the Yeti is like a freezer, you will lose some ice, but the inside temp stays so cold even with the water. Now how long it keeps ice all depends on how often and how long the lid is opened. But I have no regrets spending the money on the Yetis. I'll never buy another cooler again!