Been rolling my own clothes for years, man.

I roll them up together, put them in a dry bag if rainy, or other nylon stuff sack and shove them in my pannier. I also do it for travelling, takes up less space since you have to take the time to roll them and it keeps them organized. Some weeks I even roll a weeks worth of stuff and have it ready to pack and roll out.

I have always wanted to design a ... nevermind do not want my idea to get stolen, though it is probably made already.