I am in the process of updating and improving my backpack that I keep in the trunk for emergencies. When I traveled far and wide I also had a suitcase in the car with extra clothes and footwear. Now my travel will be mostly day trips so other than footwear I want to add clothing that will fit in the pack. Obviously socks amd underwear are no brainers. What is everyone using for pants and jackets? I'd like to pack things which aren't too bulky, but could keep me warm if the westher sucks. So what say the experts? How do you handle the clothing aspect of your pack?