Made by Gaiam & Mari Winsor, this mimics the resistance action of a Pilates reformer, using lightweight resistance bands joined in an X design. Get a dynamic resistance workout that tones, strengthens & stretches the entire body anywhere without the need for bulky equipment or trip to the studio required. The 45-minute Core Plus Reformer Workout DVD features Mari Winsor plus three short, focused segments so you can customize your core workout to fit your fitness level & schedule.