Put it in one of those net like bags with a zipper that women use to wash their delicates and wash it on its own in a delicate cold cycle. The challenge is to get a bag large enough for a pair of khakis. I have a similar RLPL khaki but its a very fine thin cotton instead of drill cotton. And as stated, it will shrink somewhat. Use delicate detergent and the usual kind. Its a real chore, clothes maintenance.