Hello sir. It is a cotton polyester blend thick fabric tarpaulin. It is a product resistant to outdoor conditions. Blocks 80% of the sun. It cuts the wind but has a breathable structure. If water does not accumulate on it, it can pass water to the back part, but if it does accumulate on it, it can pass to the back part over time. The technical name of the fabric is gabardine and it weighs 270gr per square meter. SIR, UNfortunately, OUR GRAY PERDIN IS OUT OF STOCK. IT WILL BE IN STOCK IN THE FUTURE.