Threaded seat screw inserts minimize stripping from upholstery changes. Padded and upholstered armrests and calf pads are standard. Carbon steel frame with rust- and chip-resistant chrome plating. Easy-to-clean navy vinyl upholstery. Chart pocket on back. Arm style: desk length removable. Leg style: swing-away detachable footrest. Seat size: 22" x 18" (56 cm x 46 cm). 350-lb. (159 kg) weight capacity. Optional accessories: Anti-Fold Device (item MDS85196), Overhead Anti-Theft Device for 18" - 22" Models (item MDS85197A), I.V. Pole (item MDS85183), O2 Holder (item MDS85181U), O2/I.V. Combo (item MDS85190), Anti-Tip Device (item MDS85189), 22" Pushbar (item MDS85192), Tinnerman Legrest Lock (item WCA806991).