Groin Guard - Cup - Shock Wave We thought about selling them in pairs, but just not much call for that, so we just sell them one at a time - seems to work better that way Designed for most styles of combat martial arts like MMA, UFC, Karate, though we know people buy them for kickboxing, Muay Thai, and boxing Machine washable - though the running them through the dryer a lot will kind of cook the elastic after a while Maybe that "air drying" thing would be a good idea for that?