The Deluxe Extra Wide Lumbar Support Cushion gives you the comfort and support you need. Unlike regular lumbar supports, the deluxe lumbar support gives the user 4" of extra support. Extra wide design allows for greater support and comfort for the average user. The dense but soft molded foam back cushion gives you back proper alignment and support while seating in the lumbar area. Design of the cushion and width allows it be used on almost any seat including office chairs, cars, dining chairs, lift chairs, etc. Includes zippered removable cover and strap to hold cushion in place. Dimensions: 18" x 13"