4 position adjustable frame constructed of sturdy, bicycle grade, beam welded tubular steel frame for ultimate strength and stability * Wide based foot plates at every leg deliver rock solid stability and easy access to secure anchor points * Heavy duty polyester cover is double stitched and fitted to exact frame measurements for optimal frame to cover fit * Specially coated cover lining is stitched and seam sealed for excellent water resistance and drip free seams * UV protected fabric is treated inside and out with added fade blockers, anti aging, anti fungal and anti microbial agents for long lasting performance