Suitable for professional or home use our 45kg Strongman Sandbag can be utilized in cross training, tactical fitness and military conditioning. Since our sandbags can be easily emptied and refilled, they function as a convenient to transport weight tool that can be used anywhere. The heavy-duty nylon bag consists of a double stitched outer layer with zippers and an inner bag to be filled with sand. Purchase is for the Set of bags only - no filling or sand is included General Structure: Strong Nylon CORDURA Construction Features: Designed for cross training, tactical fitness, military conditioning, athletes and home gyms. Package 1 x Strongman Sandbag for 45kg *Note - This package does not include sand/filling for the bags.