Elevating legrest models feature a notched, stainless steel ratchet bar to lock the legrests securely in place. Durable, tig-welded frame with gray powder coat finish. Swing-back arms with easy flip back arm release. Dual axle hemi-height adjustable. Smooth-rolling solid flat-free latex tires. Adjustable-height back. Comfortable nylon upholstery. Arm style: swing back desk length. Leg style: detachable elevating footrest. Seat size: 16" x 16" (41 cm x 41 cm). 250-lb.weight capacity. Optional accessories: O2 Holder (item MDS85181U), Anti-Fold Device (item MDS85196), I.V. Pole (MDS85183), Overhead Anti-Theft Device (item MDS85197A), O2/I.V. Combo (item MDS85190), Anti-Tip Device (item MDS85189), Tinnerman Legrest Locks (item WCA806991).