These are MP3 Downloadable files. Nothing physical is sent out in the mail to you. They are downloaded directly onto your computer. It is recommended that you have a BROADBAND connection to purchase your products in MP3 format. Be sure to save to your device download will expire. Listen to each hypnotherapy session for a minimum of seven consecutive days for best results. One challenge or enhancement at a time unless otherwise instructed. Give yourself a minimum of four days to maximize results. If you miss a day simply pick up where you left off.