I try to avoid "cycle specific" clothing as much as possible (mainly because of the expense). My exceptions to this rule are a pair of plain-jane mountain bike shorts and a pair of Shimano cycling shoes. Typical summer tour garb is shorts, tee shirt, cotton quarter-high socks, and cycling shoes. Admittedly, this doen't work too well through the mountains, but it fills the bill for a summer tour across the plains and east.