A protective solar, ultraviolet radiation barrier and rain barrier configured in the shape of a truncated spherical lune and supported on each side longitudinally by flexible bendable support poles that connect to a bicycle to form a canopy of a protective barrier, said bicycle having front and rear anchor blocks that include a pair of pole end receiving sockets at an angle to each other front and rear. The support poles are extra length and much longer than the distance between the front and rear anchor block sockets causing the poles to be bowed under tension when supporting the barrier sheet in position above the bicycle. The device can also be used for other vehicles that are slow-moving such as a kayak. Each support pole is formed from individual actually aligned segments and fasteners that can be collapsed into the small individual segment pieces so that the entire system including a protective barrier and the support poles can be mounted into a portable storage device.