The Uber Soccer Mini Flat Spot Marker Set is made of non-slip rubber and provides a great training aid for all types of sports training drills. Can be used indoors or outdoors, and can be planted firmly on your feet. Packaged in a durable nylon mesh transport storage bag with mesh sides for moisture control. Each spot marker is 4" in diameter. These high quality rubber flat spot markers come in 5 colors (white, yellow, blue, orange, red) or 10 colors each for a complete set of 50. Perfect for soccer, tennis, football, LA cross, field hockey, track and field competition. Great training tool for coaches, trainers, and sports teams. Use where cones are not available.