 There's no specific difference other than the size. So the children's mask, the Palcom K95SM, it's actually the same mask, however 15% smaller. All righty. And for the kids, should we replace the mask more frequently? You know, something I don't necessarily know if that's, I would say use it in the same type of thing. You know, I would categorize them as sort of disposable masks, too. So in other words, after single use.