aid blind pedestrian blindness disabled folding handicapped help mobility stick visually impaired adjustable aluminium assist assistance bodyweight bodyweight-support Canadian-crutches crutch crutches cuff disability forearm-crutches handgrip handicap handpiece legs Lofstrand-crutch metal mobility-aid support weight-transfer blow blowing fingering fingers instrument man mobile music musical musician saxophone saxophonist wheelchair wind-instrument battery-life battery-operated charged distance electric gopher mobility-scooter movement old outdated outdoors re-charged silent stationary tire tires transport transportation travel travelling tyre tyres wheels color colors colour colours cool cooling gardens green greenery height high light lighting motorised motorized mottled moving open park path pond pool public relaxing shade shadows shady shrubbery sunlight tree-lined trees undergrowth walkway aged crossing footpath motion road senior senior-citizen traveling