Maybe Berghaus are unlucky I've bought this with daily temperatures of 28C to 30C. Maybe in more normal summer temperatures it would be a bit different. But as the title says it absorbs sweat and stops it running down your face, it does not seem to get 'soggy', but it is not as breathable as I'd hoped and my head gets quite warm. I'm going to save it until we get more British Summer temperatures. Mind you I could be being unfair as there are not many hats that would be comfortable in current temperatures.
Edit 18/08/13: In temperatures of 20/22C it works OK - up one star.