Cool Wings - product review

[witeowl]

That's what I mean, though - if humidity is so low that your sweat is already evaporating as fast as you can sweat, then increasing air flow won't increase evaporation, or cooling.

Right, that's exactly what I was trying to say with my "doesn't work in the desert" hypothesis. But then uforgot shattered that.

[Biciclista]

except it is also reflecting the sun OFF of your skin which contributes to your feelings of comfort.

[Fredwina]

I also have the Arm Coolers live in the desert!
I'm going with the air flow theory. when I'm moving, they are noticeably cooler. Standing around, I want to peel them off right away!
Have the leg coolers, but haven't tried them, since my recumbent wants to give me a permanent chainring 'tat