Photo 1 of ProBody Pilates Ball 9 Inch - Small Exercise Ball for Between Knees or Barre, Core, Ab Workouts, Yoga, & Physical Therapy, Stability Ball (Sky)

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Photo 1 of ProBody Pilates Ball 9 Inch - Small Exercise Ball for Between Knees or Barre, Core, Ab Workouts, Yoga, & Physical Therapy, Stability Ball (Sky)Photo 2 of ProBody Pilates Ball 9 Inch - Small Exercise Ball for Between Knees or Barre, Core, Ab Workouts, Yoga, & Physical Therapy, Stability Ball (Sky)