I wear these:

http://www.gourmetseed.com/product/G...&utm_campaign=

They're Bamboo with nitrile palms. Oh, I wish I'd had them at Livermore, where it was so freaking hot I couldn't hold on to the hammer handle!

The bamboo breathes better than cotton and the brown color doesn't give me a stomachache like the bright yellow and blue ones which are generally available. They grip like crazy and are pretty nice to have for caber, too. However, the weights for distance and height handles will rip them up quickly, so tape up for those, instead.