Hang the Hang-emz markers from your cones for faster set-up and more effective movement courses! The arrows on the markers rotate 360 degrees, making changes a breeze. Plus you can create unique messages on the blank markers that are included in the set for endless options. Water-resistant for indoor/outdoor use. Includes: 10 flow markers 10 blank dry-erase blanks, a dry-erase pen and an Activity Guide. Hangers measure 11" long x 7 " wide. They fit any size cone. Green cones sold separately in a variety of heights: 9 (W8270), 12 (W2023) and 15 (W5469).