Knit sweatband

So I asked my brother what I should knit him (he will probably be heading down South this year for a while), and he said what he could use is a headband/sweatband. I'm thinking Cascade Fixation might work-- any recommendations for patterns & size of needles to use? He is quite a conservative dresser & persnickety about what he wears. I'm considering doing some sort of cable, like the belt in Knitty a while back.