Big Feet Donuts are uniquely manufactured for their weight, anti-slip, and dirt-resistant qualities … just like our popular Quick Feet Donuts. Each set of 6 consists of 2 red, 2 green, and 2 yellow Big Feet Donuts. Perfect for all tennis as well as physical education classes from elementary through high school. Use Big Feet Donuts for footwork, movement, positioning, and split-step guides. They are also a great tool for organizing group lessons and keeping players a safe distance apart.