an inflatable jumping toy typically employed in a play area by children performing jumping exercises is disclosed . the inflatable jumping toy comprises a construction incorporating a large torodial - shaped tube utilized as a base element and a vertical retainer wall mounted upon the top of the torodial - shaped tube . the retainer wall functions to absorb the lateral impact of a child against the jumping toy and to prevent a child from falling out of or being accidentally ejected from the jumping toy . a multi - layer bouncing mattress which is surrounded by and in communication with the torodial - shaped tube serves as a cushioned floor to absorb the vertical impact of the children during the jumping exercises . in a preferred embodiment , the multi - layer bouncing mattress includes an upper floor layer having an i - beam construction for providing maximum impact absorption of the vertical forces associated with jumping . beneath the upper i - beam layer is a lower floor layer comprising a single x - beam spiral construction which enjoys strong welded seals about one continuous spiral air chamber which promotes the passage of inflation air therethrough . as an alternative , a parallel x - beam constructed layer can be used as the lower floor layer . either lower floor layer provides a robust , wear - resistant surface for indoor or outdoor use .