Another option, and one that I always use, is to use 1 or 2 gallon ziploc bags! I put a pair of shorts, a shirt, undergarments, and a pair of socks in one bag. Here are the reasons:
1. My clothes don't get all mixed up from luggage handling
2. I get up before everyone else so I know that I can just grab a bag in the dark and everything I need will be in there.
3. If the clothes are dry, I can put them back in the bag and not wonder if something is clean or dirty.
4. No wrinkles because the shirts and shorts are rolled and stay that way!
This works very well for my family. Be sure and press all the air out of it or use a straw to suction it out.