Last summer I did my first major tour in Quebec. I had a few 140 mile days. That pretty much sitting on the bike from morning to night. I took three pairs of bicycle shorts. One mountain bike shorts with liner & pad and two spandex. One of the spandex was thick and did not breath well and took a long time to dry after I washed it. The pad was soaked and it was not a comfortable feeling. On my next trip I will add another pair spandex and change twice daily if needed. I think I sae a pair of Lois Garneau at the bicycle shop a few years ago that looked like it had more breathable fabric in that region.