The Nautilus Nitro® Plus Abdominal machine is the only true abdominal crunch machine

* Four-bar linkage provides a moving axis of rotation that simulates the body’s moving axis of rotation, increasing user safety
* Combination of elbow and back pads with hand grips provide upper body stabilization, eliminating lower back muscles’ static involvement
* Leg anchoring ankle pads provide lower body stabilization
* Controlled motion movement arms isolates abdominal sheath, eliminating hip flexor involvement
* UPDATE: The contoured seat has been upgraded with a higher density foam to improve the comfort and durability of the pad. The contours of the seat in the photo above may be different than the updated model.