Throw them in with the rest of your laundry on a delicate cycle before first wear, then after each use. (Your other clothes will be fine!) Do not use bleach or fabric softener. If you don’t have a washing machine, try handwashing your Speax in lukewarm water.
Try not to expose stretchy fabric (like Speax, and probably the rest of your undies) to high heat — a few times is okay, but making it a habit may change the fit. Or, hang them in a non-humid environment, and wait for them to fully dry before putting them away. No ironing, please!
Two birds, one stone
I already keep a bag for dirty clothes in my gym bag, and since I mostly need Speax at the gym (one word: squats), I wash everything right away when I get home. - Olivia J.
Keep things cool
I don’t have enough pairs to warrant drying them separately so I just air dry them. Recently, I started putting the drying rack facing the AC (fan would probably work too) so the crotch of the underwear dries faster! - Denise B.
Sometimes I don’t have time to do laundry as quickly as I probably should, so to make sure the undies get extra clean, I rinse them in equal parts water and white vinegar for about 15 minutes before washing. - Jody A.