These K4 wheelchairs from Medline are lightweight, with an extra-wide 20" seat that can seat patients of larger stature. With comfortable armrests and legrests, it is one of the most economical and usable options for mobility. Features: Swing back arms with easy flip back arm release. Armrests and calf pads are upholstered and padded. Quick release axles allow tool-free removal of rear wheels. Dual axle hemi-height adjustable; Adjustable height back. Tough nylon upholstery. Arm styles available: swing back desk length and swing back height adjustable desk length; Leg style: detachable footrest and detachable elevating footrest. Seat sizes come in: 20" x 18" (51 cm x 46 cm) and 22" x 18" (56 cm x 41 cm).