Taut Line Kits black reflective 550 Paracord is made of 100% nylon that’s highly visible even in low light environments Hang towels, boots, water filters and backpacks with this heavy-duty 50 ft Paracord; offers plenty of cordage to tie down tarps and tents Make quick adjustments and keep clothesline from sagging using the four handy Line Tensioners with numbered slots (also sold separately) Pull apart the 7-strand cordage and use it as a fishing line or thread as needed Leave Line Tensioners in place all day and night in all types of weather; the aluminum finish will not rust or fade