A retractable mobility-scooter canopy system comprising a plurality of support elements 38, 40, at least a majority of the support elements 40 being movable relative to each other, and a pliantly-flexible cover element 42 extending between each said movable support element 40. The or each cover element 42 is at least in part light transmissible. An in use lowermost support element 52 having a contoured longitudinal extent defining a wind-occluding portion 52b which in use complementarily or substantially complementarily matches a step-through portion 20 of a chassis of a mobility scooter 10 to which the canopy system is attached, thereby occluding wind ingress and preventing or limiting a lateral tipping hazard. At least one support element 38 may function as a roll bar. A portion 68 of the cover may form a secondary cover over a container. A closable container for suspending from an arm rest may also be included, said container being automatically closed on pivoting the arm rest.
