These bright colorful cones are constructed of tough weatherproof flexible vinyl. Nonporous, dirt-resistant surface can be easily cleaned. Cones have a 75amp;#176; recovery angle with a weighted base for maximum stability. Will not mar floors. Virtually indestructible. Will collapse under pressure then spring back into shape. Easy stacking. Can be used for lane markers, cross country, foul lines, out-of-bounds, record markers, crowd control, obstacle courses, goal markers, boundary markers, marking danger areas, repair areas and driver training. The cone is 18" high with a 10 3/4" base.