Bummer undies perform best when they are hand washed cold and laid flat to dry. However, if you're just too lazy - throw them in the machine on a cold-delicate setting. We know, you'll probably end up doing the latter only.
Due to the sensitivity of the fabric, for longer lasting dyes and sustainability of the fabric, garment should not be put in a dryer. We also do not recommend ironing your undies (who even does that?!?) but just incase you decide to cause you've gotten time to kill, DON'T. You don't want to ruin your newly found love affair with your bum.
Before washing for the first time, always read the fabric care label of each garment.
Flipping your undies inside out & washing separately can help keep them like new for longer as well as keeping the color from some dyes from transferring to other surfaces.
Take care of your Bummer undies and Bummer will take care of you!