This Well Designed Dolphin Spring Rider By Megastar is a must have Toy For your garden & Play area .A spring playground toyor spring rocker is a bouncy, outdoors playing device. It mainly consists of a metal spring beneath a plastic or wooden central beam or flange, with 1 to 4 plastic or fiberglass seats above it. When a person sits on it, the structure moves and bounces.Spring playground toysarecommon in many playgrounds.