The spare canopy is made of green polyester (180gms/m) that is shower proof and fade resistant It has 16 velcro tabs on the inside for fastening to the swing seat frame, 4 on each side. It has strengthening pieces on the corners It will fit most types of wooden or metal swing seat roof frames, but please measure your swing seat frame first The spare canopy is approx 190cms wide and 120cms deep, please see diagram Please note you are buying the polyester canopy only. Swing seat is for display only