Until that product comes out of R&D, I'll be running ice cubes over my head, which is surprisingly effective (soak your hairline first, work back from there). However, it's only appropriate for fellow heat-wave sufferers who have reached the point that cooling trumps all other considerations, namely, don't let's look like freaks.
This heat doesn't keep Cleo from wanting to run around outside wearing a fleece jacket. I'm not sure what her goal was with that idea, so I suggested instead that she play naked in the wading pool in the shade, and that was an acceptable alternative. So yesterday, she had an hour-long intensive course in fluid dynamics while I sipped my iced coffee with my feet in cold water. Not a bad way to spend the afternoon.