The Prima si Wheelchair, also called Tango, is a manual tilt-in-space wheelchair designed for use by individuals with lower extremity, mobility, or neurological disabiltiies or spinal cord injury. FRAME: Overall frame length without the footrest is 27 to 33 inches with a 20-inch wheel, 28 to 34 inches with a 22-inch wheel, and 29 to 35 inches with a 24-inch wheel. The overall width is seat width plus 8.25 to 9.75 inches. This chair tilts from minus 5 to plus 45 degrees with three positions for balance adjustment. SEAT (LxW): 16, 17, 18, or 19 inches x 14, 15, 16, 17, 18, 19, or 20 inches. The floor to seat height is adjustable from 14 to 18 inches in 1-inch increments. This chair is equipped with a rigid seat with a reclining, foldable, height- and angle-adjustable backrest. CUSHION: Profiled or straight cushion. BRAKES: Standard wheel lock. CASTERS: 6-, 7-, or 8-inch polyurethane or pneumatic front casters. WHEELS: Mag or spoke rear wheels with 20-, 22-, or 24-inch pneumatic, semi-pneumatic, or polyurethane tires and aluminum, plastic, or foam-coated handrims. FOOTRESTS: Swing-away angle-adjustable footrests. CAPACITY: 250 pounds. WEIGHT: 38 pounds without rear wheels or footplates.