Numbered on all four sides allows you to capture all desired photo angles without stopping to re-position the cone. Designed not to move, slide, or tip-over even in extremely windy conditions. Available in 3 bright colors to aid in marking multiple categories of evidence. Holes in top for use with flags or chemical light sticks. Stackable and compact yet sturdy and heavy-duty. Specify color required (G for Green, Y for Yellow and R for Red).