I've been asked to purchase a pair of bike shorts for a family member. Trouble is, I have no idea what size to get. This is supposed to be a gift so I can't ask either. Anyways, the guy is about 6'5"-6'7" and weighs about 200lbs. I don't wear the road bike style shorts, so I don't know how forgiving the sizing is, but if any guys here have any ideas, I would appreciate the help.