Full Height Backrest
Allows you to add support and correct for chairs that are too deep.
Seats that are too deep do not let you use the proper support of the backrest. You end up assuming a rounded, slouched posture.
Other than buying a new chair finding a cushion to fill that extra space is the only fix. This 3" deep cushion does this for you.
20" high x 14" wide x 3" deep