REQUIRED for the Nintendo Switch game JUST DANCE 2020/21. We're playing it with kids and can't figure out how to do it with just joycons with a wrist strap. Suggest buying an adult and a child size, only tried the adult size and a bit big for my 5th grade but doable and a way to bet for my 1st grade. Then I bought a second set (kid size) which is perfect for both and we use adults when playing with kids.