Reliably elevates boat cover to prevent water from accumulating atop cover Can extend life of the cover by as much as 50 percent Intended for boats up to 19 feet Telescoping center pole adjusts from 28 inches to 48 inches tall Pole, poly web straps and bow spreader form double ridgeline under cover Water runs off the cover rather than pooling in low center area 1-inch wide black poly web straps attach to stern using non-marring hooks