... size,color and logo available; Gym Ball/Exercise ball/Fitness ball/Yoga ball/Pilates ball/Swiss ball/Fit ball; regular ... gym ball; Description: Gym ball, other names, like swiss ball, fitness ball, exercise ball, yoga ball, workout ball, stability ball, ... coordination of core muscles; Strenthen and tone abdominal, chest, thigh, leg, arms and buttocks; Increase flexibility and stablity; Fitness ball