If you are new to Swiss ball training, this is the program to get started with. Also, a great healthy back program! This DVD starts with one-on-one instruction of proper technique and variations for each exercise. Then follow Paul through an active warm up and a 30 minute workout. You can reap the benefits of Swiss ball training with 2-3 workouts a week, at home, outside, or in the gym. We recommend mastering these exercises before progressing to Swiss Ball Exercises for Athletes or Strong & Stable. LENGTH: 19 cm,WIDTH: 14, cm HEIGHT: 1 cm, WEIGHT: 0.095 kg.