Bouncing on a Gymnic Hop 55 promotes balance and coordination in children while providing a fun workout. The Hop 55 Ships uninflated so parents can adjust the level of inflation according to the size and age of the child; includes 1 valve and 1 Plug. Patented handgrip ensures safe bouncing; inflated ball measures 22" in diameter and has a maximum sustainable weight of 160 pounds.
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