Why We Are Different! Non-Skid Vinyl Material These spot markers are made from non-skid vinyl. This is to ensure a safe product and to resist sliding across gym floors or pavement when being ran on during different activities, making them great for use during fast-paced games and drills. Perfect 9-inch Diameter With our 9-inch diameter mixed with our vibrant colors our poly spot markers are clearly visible from a far distance to ensure no confusion. 9 inches is perfect for all different activities and allows for students/athletes to participate to the best of their ability. Rip-Resistant Material With ripping being a big problem in the industry, we used rip-resistant vinyl to make sure ripping will not happen. Ripping is extremely unlikely to happen from running or playing with these and therefore allows for long-term use and fun. Our Product Provides Easy Storage, High-Quality, Extreme Durability and Vibrant Colors Here is what our spot markers provide! Easy Storage: Our light-weight and stackable markers allow to store 24 within a 9x9x1 inch area. High-Quality: We use a non-slid material so that our markers won't slide around while being used. Also we use a rip-resistant material to ensure long-lasting markers and fun.Durability: Our markers will withstand any amount of use. From all-day gym class to soccer practice every night, our markers will never get worn down. Easy-Use: These markers can be used by anyone, completely fool proof and also perfect for any activity.Vibrant Colors: Our spots are made with beautiful vibrant colors that stick out on any surface helping everyone see their spots even at far distances. Easy Cleaning! Our poly spot markers wash off with just the ease of water and a rag. Our non-stick material allows our spots to stay mostly clean and then with the easy use of simply water and a rag you will have your spots looking brand new every time you clean them. Water will never negatively affect our spots due to our water-resistant anti-fouling.