If you follow the directions on the clothing it tells you how to wash, no clothing I've ever bought for cycling, or any other clothes, ever said to hand wash, so why would I hand wash? I'm not that anal.
So according to the instructions of all of my cycling clothes, machine wash on gentle and cold water with no bleach, and tumble dry low heat, but I usually just hang dry all my cycling clothes especially the shorts since I don't think the padding takes kindly to heat even though they say it's ok to do.