The cover is made of sturdy PVC-coated polyester and has an air vent in the center of the cover (four air slots, no additional small cover is used). In contrast to conventional uncoated covers, this cover is waterproof and can also be used in the rain. The cover is ideal if your old one has been worn out or you want to equip your marquee with a waterproof cover. The cover fits most traditional metal and aluminum marquees. Note: The dimensions of the marquee cover should always be as close as possible to those of the frame. If the marquee cover is too large, water bags can form due to the poor fit, which can then damage the cover or the frame over time. The cover is designed to protect people against the rays of the sun and light rain. The cover is not stormproof and not suitable for use in winter.