Indoor & Outdoor Uses: This spot marker set is designed to withstand players running over it, sure to hold up to indoor or outdoor use in various conditions. could sit or stand in sequence according to these spot markers. Great for gym agility, yoga stations, exercise drills, classroom activities. Uses: These assorted spot markers are suitable for a variety of sports in gym class or agility drills. Great for physical education and games like baseball, football, soccer, basketball and any other sports. Non-slip Design: The floor spot markers boast non-slip points on the back to avoid sliding on the gym floor or sidewalk when stepped on or run over during the exercise, making you safe for use during fast paced games and drills. Premium Quality: These poly spot markers are made of tear-resistant poly vinyl, incredibly durable, wear and water resistant, which can withstand a variety of games and drills on any indoor and outdoor surface. Our 15 pack 9 inch spot markers features 5 colors, red, yellow, orange, green and blue, 3 pcs each color. All markers are brightly colored for high visibility, easy to recognize during games, exercises during training or sport activities.