Abstract: A portable cover apparatus for use in vehicular and outdoor applications where sheltering, such as shading from the sun and other environmental elements is desired. The apparatus includes a flexible cover adequate for the particular environmental covering task at hand, i.e. mesh or closed sheet material, supported by structurally independent mast and base supports. Each independent base support has a horizontal anchoring portion, and a vertically offset mast attachment portion that coacts with a telescoping variable length mast to accommodate various shapes and positioning of the flexible cover. In a preferred embodiment, the cover may be attached to the upper mast ends using hook-ended stretch cords, as a method of compensating for different sizes of objects to be covered as well to absorb stress from wind. The side curtains are detachable from the top cover using mating hook and loop fastening material.