SmithShaper FIT Bundle: Ab Squat Rider FIT Multipurpose Exerciser & Super PA... $53.90 Make sure this fits by entering your model number. STAY SAFE – Workout at Home! 25 exercises are possible on the SmithShaper Ab Squat Rider FIT. Enables EASY & HIGH REPS of Ab Rolls, Squats & more! Includes Squat Mat Knee Pad. Illustrated Exercise Poster included. Free online exercise video. The ONLY body weight resistance rolling workout device enabling beginners to do EASY abdominal roll-outs to carve and cut six pack abs because forearms can be used to perform the ab roll exercise. Not possible with ab wheels, ab roller, etc.