This piece of play equipment is based on the TuffRiders® Horse. They make several different riders (mostly animals), but the horse is certainly one of the most iconic, perhaps because it is rooted in the traditional rocking horse.
So, here the Horse Spring Rider.
It has two types: one for each type of base, Spring or Torsion Spring. And the materials are all parametric, though according to the product page it is only available in these colors.