... after packing, easy to transport and storage.5, Optional side cover: with/without side cover, it’s optional according to customers’ requirement. ... .5, Cover material: PVC coated polyester textile with double sides surface treatment, with self cleaning function, flame retardant to DIN 4102 ... the hotness, sunlight and the UV-ray.6, The side cover, window, door, lining and other accessories are optional.