The latest in back support technology combines aesthetic appeal with superior positioning and function. The full range of patent-pending hardware options ensures optimal adjustment for the widest range of applications, while the lightweight carbon fiber shell provides exceptional support and durability. The Invacare Matrx MX1 Back is designed for active individuals who demand peak performance and great looks. Features Carbon Fiber Back Shell Durable solid carbon fiber shell provides controlled flex to reduce vibration. Contoured to provide hip/trunk stability and enhance upper extremity mobility and function. Very light weight and aesthetically appealing Cover Breathable, attractive spacer mesh fabric. Cover and foam overlap the shell edge to protect the user Adjustable Sacral/Lumbar Support Includes lumbo-sacral support that is easily adjustable to meet individual needs Mounting Hardware Mono Mount Patent Pending Attaches to wheelchair rigidizer bar providing complete clearance from back canes for optimal propulsion and reach. Fully angle adjustable, remains securely fastened in desired position and included track provides height adjustment. Fits rigidizer bars 3/4 19mm optional 7/8 22mm and 1 25mm band clamps available Fixed Dual Mount Patent Pending Attaches to wheelchair back canes requires tools for removal . Fits back canes 1 25mm in diameter optional 3/4 19mm and 7/8 22mm diameter band clamps available. Attractive, low profile hardware with no sharp edges. Adjustable width to fit wheelchairs 1 wide or 1 narrower than back width, providing optimal fit and support to user Quick Release Dual Mount Patent Pending Back cane mount hardware with quick release tabs for easy removal from wheelchair. Includes band clamps to fit 3/4 19mm , 7/8 22mm or 1 25mm diameter back canes. Attractive, low profile hardware and 2 adjustable width Specifications Back Width 14 in 1 increments Back Height 9 , 12 , 16 Seat Depth Depth Adjustment-2 Seat Angel 30 degrees range /-15 degrees Product Weight Capacity 250 lbs Warranty 2 years ***Please call in your order for this product so that we can customize this to fit your needs.1 Each / Each