Wow... it really works!

I have to give it 4 stars because I don't believe it would keep you cool in the scorching heat for two entire days. It wasn't that cool as it lay on the counter after getting it wet. But... my experience was using it for 2 hours outdoors while walking in th eheat and it stayed very cool. It worked wonders for keeping me a lot cooler when normally I would have been overheated. You just swish it around in cold water a couple of minutes before using. This item is worth every penny.