All 4 DVD’s are 30 minutes, and have lots of bonus features, including trailers for the other Lotte Berk DVD’s, and even a special short bonus workout. The quality of the picture and sound is excellent, and the workouts are chaptered so you can go where you want. They all start out the same way, with about 7 minutes of the same warmup. It consists of vigorous knee lifts, pushups (the kind you do on your knees), and backwards pushups for the triceps. Then, there is the workout.