The Spencer 450/451 chair has everything to offer its patients to ensure higher comforts. The harmonious designed chairs contain backrest comprised of variable tensions and offers comfortable adjustments. The posterior handles position can be changed and calibrated by its operators. The chair also comes with armrests and available in smaller versions as well to provide optimum features, stability and comfort in space confined locations. Spencer 450/451 chair is available with two polypropylene 50 mm [1.96 in] straps.