【Versatile Use】 - Changshengda outdoor ballast bags are perfect for stabilizing parasols, awnings, trampolines, clothes racks, and even as doorstops. They offer a practical solution for maintaining the stability of your outdoor furniture. 【Easy to Use】 - Each parasol-shaped ballast bag holds up to 15 kg. Fill them with sand, gravel, or pebbles to create a reliable counterweight and ensure the stability of your outdoor furniture. Note: Do not fill with water. 【Premium Material】 - Made from high-quality 600D Oxford fabric, these parasol ballast bags are waterproof and tear-resistant. Designed to withstand all weather conditions, they can be used year-round. 【Practical Design】 - With a wide opening and a double Velcro closure, these sandbags allow for quick and easy filling while preventing leakage. Each bag also comes with two sturdy straps for easy transport and placement. 【Package Contents】 - The set includes 4 sandbags, each measuring 29.1 × 11.2 inches. Note: Sand is not included.