Made by JFIT, this high-quality foam ab trainer is designed to support your lower back during core training workouts, with durable materials that will maintain its shape and firmness throughout multiple workouts. Our abdominal pad trainer features a unique design that contours to your back to support it while exercising, while sturdy enough to offer stability, without putting unnecessary pressure on your body. Not only is this exercise pad designed to develop and tone upper and lower abs, lower back muscles, and obliques, but you can also benefit from curl-ups, cross-body sit ups, and single-leg sit ups. Our ab exercise pad is designed for proper technique and full range of motion - meaning that while exercising, muscles move from fully extended to fully contracted, maximizing effectiveness, and preventing injury.