The Discovery Back chair was designed to specifically address users seeking to promote a healthier seating posture. The unique"Pear-Shaped" design of the backrest permits a seated user's shoulder blades to travel more fully rearward when leaning back. All DB Series models feature an elegant fabric panel back that is upholstered in a black-colored, super-durable fabric. Discovery Back Collection Includes: DB52 ,DB53, DB56, DB57, DB64, DB68, DB74, DB78, DB92, DB96, etc.