@carlosmurray706: HXD-ERGO Ab Wheel Roller makes core training simple for adults over 40! Stop skipping abs with this 10-minute ab workout. I do 100 reps, 4 sets of 25, every other day. This portable ab roller features automatic rebound assistance, a wide stable base, and a built-in timer. Perfect for home gym workouts, ab exercises, and building a consistent core training routine without spending hours exercising. @HXD ERGO US