This product is suitable for a 300cm long, 6-rib parasol base (please note that this product does not include a parasol base). The replacement canopies have ventilation slots that allow a cooling breeze to pass through and fit wooden, steel, and aluminum frames. The mattress topper is very simple to install and easy to install and remove, and can be installed in just a few minutes. Please make sure your parasol has 6 ribs and the length of each rib corresponds to the image. You can cut the holes larger to fit your parasol base. Decorate your patio, poolside, garden, or lawn with our outdoor parasol replacement canopies according to the season or occasion. Product Description Features Waterproof and UV protection can extend the life of your garden parasol. Please make sure your garden parasol has 6 ribs/6 panels. Length of each rib 300cm/10ft: 146-147cm/57.5-57.9inch Easy to install our canopies and your parasol base in the garden. Suitable for wooden, steel, and aluminum umbrella