The ABS Company Lumbar XThe Lumbar X is a 45 degree back extension bench is a versatile piece of equipment that is designed for development of the lower back, glutes, and hamstrings. Its comfortable padding and telescoping height make it the perfect complement for an entire core workout. This 45 degree back extension bench with its comfortable padding and telescoping height make it the perfect complement for an entire core workout. A fundamental piece of equipment for core