NOTE: The Best Gluteus Medius Exercises and Best Gluteus Maximus Exercises programs are set of downloadable videos and PDF files. No physical products will be shipped. After you order, you will get INSTANT ACCESS to download the videos and PDF files. The PDF files can be viewed on Mac or PC. The video format is M4V which can be viewed on Mac or PC. If you have any questions or need help, you can contact us at support@ExercisesForInjuries.com.