【9 INCH DIAMETER】There are 5 different colors, red, yellow, orange, green and blue. Size: 9 inch (23cm); Quantities: 20pcs.LZKIB's poly spot marker is equipped with portable storage bag for easy placement and carrying. 【SAFE PLAY WITH NON-SLIP MARKER】Made of imported PVC material,non-toxic,harmless and odorless,the edge of spot marker is round,but not sharp,safe and skin-friendly;Soft,wear-resistant,providing excellent stability,universal in all seasons. 【NON-SLIP DOTS ON THE BACK】Non-slip points on the back to prevent sliding on the gym floor or sidewalk when stepped on or run over during an event.Tear-resistant design ensuring long life during games and drills on the playground or in the class.So it is safe to use during fast-paced games and training. 【USE INDOOR OR OUTDOOR】Spot Markers works on all surfaces including use on concrete, tile, carpet, wooden surface, natural grass and artificial turf fieldare；Great for sports,classroom or party activities- keep kids entertained for hours while enhancing their creativity and cognitive skills—Make your activities pop, active, and organized! 【BRIGHT, VIBRANT COLORS】Designed for optimal visibility comes with 5 kinds of bright colors,can let you find the target in gym class or for agility dots training when practicing football,hockey, basketball,soccer,dance etc.Which is a great alternative to traditional cone markers. LZKIB Spot Markers - Durable, Useful and Affordable ? Perfect for gym class, playground games, and training for basketball, soccer, hockey, football and other sports.