"I purchased 2 sets (24) for our Cub Scouts to help with many of our events. They worked great for creating an additional barrier between the scouts and our Pinewood Derby track as well as helping to "block off" area's of the gym to protect our projectors and cables. They are exactly what they look like 8 1/2" tall cones. They are made of hard plastic and not the flexible soft plastic which works out fine for us. Depending on your use for them they could be a little shorter than you like but for our purpose it was perfect."