BALANCE BALL KIT: Total Body Balance Ball workout kit with medium (65 cm) exercise ball for an ideal low-impact core strengthening workout WORKOUT GUIDE INCLUDED: Exercise abs, back, glutes, lower and upper body with the included yoga ball and a 105-minute workout designed by fitness expert Tanja Djelevic 65cm BALANCE BALL: Medium size balance ball is recommended for users between 5'6" and 5'11" tall. Use the stability ball as an exercise and fitness tool or as an alternative office desk chair solution for active sitting. KIT INCLUDES: Medium green exercise ball for yoga and Pilates, easy-inflate air pump, and workouts (Packaging may vary to include DVD or Digital Download) INFLATION NOTICE: It may be necessary to re-inflate your new Balance Ball once or twice after initial inflation to stretch the ball to its final size. Inflate ball with air, let stand for 24 hours, deflate 50% then fill again to 65cm height.