Elevating legrest models feature a notched, stainless steel ratchet bar to lock the legrests securely in place. Swing back arms with easy flip back arm release. Padded and upholstered armrests and calf pads are standard. Quick release axles allow tool-free removal of rear wheels. Dual axle hemi-height adjustable. Adjustable height back. Tough nylon upholstery. Arm style: swing back desk length. Leg style: detachable footrest. Seat size: 18" x 16" (46 cm x 41 cm). 300-lb. weight capacity. Optional accessories: O2 Holder (item MDS85181U), Anti-Fold Device (item MDS85196), I.V. Pole (MDS85183), O2/I.V. Combo (item MDS85190), Anti-Tip Device (item MDS85189WK4), Seat Extension Kit for 18" wide only (item WCA806922EXT), Tinnerman Legrest Locks (item WCA806991).