Therapist&rsquo;s Choice&reg; Abdominal Trainer Mat for Full Range of Motion Ab Workouts, Back Stretcher & Plank Board all in one! Therapists Choice Abdominal Trainer Mat for Full Range of Motion Ab Workouts, Back Stretcher & Plank Board all in one! Full 6 Pack Isolation: Provides complete isolation of your ab muscles during crunches, leg lifts and sit-ups A complete core exercises and training for the Abs, Back, & Oblique's. Includes Basic Instructional Manual Back Stretcher: The Mat's curved shape mimics the curved shape of our spine giving an effective stretch. Used for chronic back pain, sciatic pain, stress, & restless nights. Just use 10 minutes daily or as recommended by your healthcare practitioner. Plank Board: The High Density Foam on our Mat makes a comfortable arm rest for Front and Side Planks.