The Baller Elite is a sport wheelchair designed for use by individuals with mobility disabilities or spinal cord injury. FRAME (LxW): 16 x 16 inches. Magnesium alloy powder coat frame with 1.375-inch tubing. Aluminum side guards are standard. SEAT (WxD): 14, 15, 16, 17 or 18 x 14, 15, 16, 17 or 18 inches. Backrest height is available from 5 to 20 inches in 1-inch increments. The backrest is welded and non-folding. UPHOLSTERY: Laminated carbon fiber sailcloth adjustable by tension cord. CASTERS: 3.25-inch casters with titanium bearings and Frogs Legs Unitine forks. WHEELS: Spinergy SLX wheels (24, 25 or 26 inches diameter) with Schwalbe Speed Run Tires and titanium hardware. FOOTRESTS: Single-piece footrest. WEIGHT: 22.5 pounds. WARRANTY: Lifetime limited warranty on frame.