More about this sit up bench here - http://abmachinesguide.info/sit-up-bench

This is the one of the best sit-up bench that is adjustable and comes with a comfortable board. Because of the 12 level adjustment, the resistance can be increased or decreased.

This is an optimal fitness equipment to train the abdominal muscles effectively.

You can read more review on the best ab machines here: http://abmachinesguide.com/reviews/