Simply slip the cone collar over the top of any cone ( 9 or taller is recommended) to create circuit training stations, marking fields, organizing relay races, divide participants into teams in short, whenever some organization is required during games or activities! Cone collars are made of 100% quality nylon, easy to clean and are puncture-proof and water-proof. Available in Red, Blue, Green, Yellow, Purple, and Orange. SIZE: 11 H X 10 X 5.5 . Holds index cards up to 5 X 8 . Set of 6.