Rip stop tough triple layer woven polyethylene fabric material built to exact specifications of original canopy * 1 piece fitted cover with heat welded seams not stitched for a stronger bond and drip free seams * Patented twist tite tensioning squares up frames and tightens down cover for a clean and finished look * Ultimate UV protection treated inside, outside and in between with added fade blockers, anti aging, anti yellowing and anti microbial agents for long lasting performance * 50+ UPF sun protection blocking 98 percent of harmful UV Rays