Machine wash. Used Dr. Bronner's unscented soap, cold, gentle cycle. One of these days I'll buy a decent camera, although I think I need a better reason to do so than wanting to post better WAYWTs. Surprisingly little indigo loss. Areas most affected include: - honeycombs - stacks - phone outline - hidden rivets - some crotch whiskers - minor knee-area fades - the place where my laptop bag rubs against my right hip Fortunately, honeycombs, lap whiskers, and stacks seem to line up identically pre- and post-wash. Probably gonna wash a hell of a lot more know that it's getting warm out.