Finally gave up the full bike leathers until about October. I'm sure I've had a heatstroke every morning now for a month driving to work. Fortunately our office has showers...
I picked up a couple of Icebreaker (merino wool) products from the outlet in Sydney. I can't wear ordinary wool but this stuff doesn't make me itch. It's supposed to be good for warmer humid weather. Will have to see how it performs in a Hong Kong summer.
Is this Clima Cool stuff anything like UnderArmour Heat Gear? i.e. a close fitting synthetic that's supposed to wick sweat? I tried UnderArmour stuff and it just made me hotter.
Claire: I've tried lightweight Smartwool socks here- bloody hot compared to thin Coolmax ones. Even though the new wool fabrics are marketed as good for hot weather, I think that super-thin synthetics is still better for comfort. To get wool as thin as a synthetic later, it'd just get too fragile and go baggy.
Best stuff I have found for outdoorsy stuff is the Rab Carrington Aeon shirts. Super thin but smooth so not prone to snagging. They have to be ordered from overseas though (unless Chamonix carries them, they carry other Rab gear).
Though for clothing that really handles hot weather, it's probably hard to beat this
http://www.veskimo.com/body-cooling-vest-products.php