Gymnic / Hop-55 22" Hop Ball, Red 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 Made from soft, super-strong, latex-free bands, BPA-free and phthalate-free vinyl for years of worry-free enjoyment Suitable for children ages 6 and up