Gymnic Classic Plus® Burst Resistant Quality Ball - 55 cm (Red) OPTP is your affordable source for Gymnic balls, the exercise ball certified by the German T.U.V. lab for quality. These heavy-duty, inflatable vinyl balls are brightly colored and can support up to 600 pounds. Therapy with versatile Gymnic Exercise Balls promotes flexibility, balance, vestibular stimulation, strengthening, coordination, proprioception and neuromotor learning. Gymnic Exercise Balls can be used to challenge any age patient, including those with neurological, orthopedic, cardiac, sports medicine, chronic pain and post-partum diagnoses. Gymnic Classic Plus "Burst Resistant Quality" exercise balls slowly deflate, reducing the chance of injury. Ideal for high-risk patients or high-performance workouts Item is shipped deflated and need to be blew up with a needle pump(Not included).Inflation pumps are sold separately