The big ones, and the range is wider than the word suggests. Most of this shelf sits at 10 cm — clearly bigger than a palm-sized dumpling, still one-handed. Five designs reach 15 cm, where it becomes a two-hand object, and two go to 25 cm.
Size and feel are the same variable here: the rise depends on how much foam has to move, so a giant takes several seconds to rebuild its shape where a mini takes about one. That is why the big ones are the ones people film. It is also why they are not pocket toys — a 25 cm dumpling is a desk or shelf object that happens to be squeezable.