As a product expert, I recommend the Pilates Spine Corrector with INCLUDED Rubber Handles and UPGRADES F2 System. This versatile equipment offers a Standard size (15.8"x38.6"x14.6") for a wider range of exercises, and a Deep Curve size (15"x33.8"x13.4") for a more challenging workout. With a total weight of 28 lbs and 23.5 lbs, respectively, it provides a stable and effective core workout.
