Foldable, lightweight frame for easy portability (Figure A)Steel double cross-brace frame Adjustable-tension back upholstery Armrests are padded, adjustable and removable Adjustable-length controller mount Adjustable-tension back upholstery Swing-away footrests with heel loops Optional elevating leg rests (CPELR) sold separately Optional 2" seat depth extension (Model #STDS1818N) sold separately Positioning belt included Padded back upholstery with storage pouch and cushioned seat Programmable controller Flat-free, non-marking tires Easy free-wheel operation Manual wheel locks General foam seat cushion included Anti-tip wheels