Gymenist Exercise Inflatable Gym Ball Great for a Pregnancy Ball... Also a Stretching , Workout Exercise Ball "Free Pump Included" Gym ball for all kind of home workouts also great for a pregnancy ball Every size has a Diffrent color , 45 cm Yellow (small),55 cm Red (medium),65cm blue (large),75 cm grey (x large) Free Pump included and triple stitched with a soft shell covering, Great quality Material non toxic PVC Increase flexibility, And develop strength, Great for yoga, gymnastics, or any other exercise workout