Oxnard Products Ab Bundle - 2 Items: Sit Up Mat and Ab Wheel UNIQUE BUNDLE: Two items - an ab exercise mat and ab wheel. The only bundle of its kind sold on Amazon! VERSATILE: This sit up pad and ab wheel roller offer you the optimal abdominal trainer toolkit. FOCUS ON YOUR ABS: Perfect for Crossfit workouts to help isolate your abdominal muscles. HIGH QUALITY CONSTRUCTION AND MATERIALS. This workout mat is constructed of high density foam. WE CANNOT BE BEAT. Compare us to Golds Gym, Ab Mat, Rogue, Everlast, ProSource, Crossfit and Lifeline.