Folding wheelchair made of coated steel with tubular frame with round cross-section and double cross. The armrests can be folded, removed and adjusted in height by means of an interlocking system. The armrests can be folded, removed and adjusted in height by means of an interlocking system. The backrest and the seat are made of synthetic fibres flexible enough to allow easy folding of the wheelchair. The handrail is made of chrome-plated steel. The footrests are made of plastic and feature tibiotarsal adjustment and heel straps. The wheelchair is equipped with quick-release rear wheels. These wheels are available in two sizes: small with ø 300 and large with ø 600. Moreover, the device has small rear manoeuvring wheels that can be fitted in case the rear wheels are removed in order to reach tight spaces.