Abstract: A storage-size-adjustable play tunnel for children includes a supporting frame constituting a tunnel structure, and a cloth cover. End openings at two sides of the tunnel structure communicate each other. The supporting frame is formed by bending a spring steel wire. The spring steel wire is bent to form a plurality of continuous loop parts. Both ends of the spring steel wire are provided with a locking mechanism. By means of the locking mechanism, the two ends of the spring steel wire can integrally slide along the spring steel wire and be fastened onto any positions of the spring steel wire. With sliding of the two ends of the spring steel wire, the supporting frame is adjustable in a radial direction as a whole.

Abstract: A jumper apparatus may include a ring, a set of poles along the ring and a pneumatic tube. Each pole of the set of poles may have a first axial end portion inwardly extending towards a centerline of the ring, a second axial end portion outwardly extending away from the centerline of the ring and a vertical portion connecting the first axial end portion and the second axial end portion. The ring is vertically located between the first axial end portion and the second axial end portion of each pole. The pneumatic tube may extend about the set of poles over the second axial end portion of each pole.