The Synergy Shape Deep Contour Back Medium is ergonomically contoured, and features a high-density foam base and a four-way stretch cover, among other things. Features Ergonomically contoured High-density base foam with a soft viscoelastic upper layer Four-way stretch cover overlaps back pan 2-Point, Quick Release Hardware and Tilt Rated Bolt On Hardware Quick-release levers Accommodates an array of headrests and accessories Includes 7 H x 6 D Lateral Thoracic Supports with Mounting Brackets Benefits Helps promote good posture Offers conforming comfort without allowing bottom out Prevents back cushion from shifting position Allows for fast installation and easy depth and angle adjustment, even while occupied Allows the client to maintain an independent, active lifestyle Provides easy, solid attachment to back canes Provides support for a wide range of body types Able to meet the needs of a wide range of clients Specifications Model Synergy Shape Back Deep Contour Medium Code E2620/E2621Weight Capacity 250 lbs. Width 14 , 16 , 18 , 20 and 22 Height 23 Adjustability Angle adjustment of 33 degrees through 57 degrees 2 of width adjustment 2 of Depth Adjustment Height adjustable 1 Each / Each