The Champion Sports Universal Soccer Corner Flags offer a versatile solution for marking boundaries in any soccer environment. This set of four bright red flags, each measuring 60 inches tall and attached to sturdy 1-inch diameter plastic poles, is suitable for both indoor and outdoor use. The key feature is the hollow base, designed to be filled with sand for added stability. This makes them ideal for gym floors or turf fields, where traditional ground spikes might not be suitable. Perfect for marking corners of playing areas or setting up drills at practice, the Champion Sports Universal Soccer Corner Flags are a practical choice for any gym class or soccer team looking for a versatile solution.