Quantity : 2 pieces Color: Black Expanded size: 18*40cm Urban Use: Don't worry about no sand in the city, just recycle it to fill with water and make your rooftop tent act like a sandbag. Waterproof and Windproof: Easy to use with a simple handle and screw cap, made of durable, waterproof PVC that won't leak. Each weight bag has a convenient Velcro closure, hooks and leg straps to wrap around your awning for protection from strong winds and other elements. VERY EASY TO USE AND CARRY/TRANSPORT: These water weights (set of 2 bags) can hold up to 10 liters of water. The weight is empty for easy storage, saving more than 90% space. After dump (only 6 x 6 x 5cm). User-friendly design: Ties are long enough to support our 45 corner legs and fit legs from 15mm to 50mm. You can adjust it as needed. Simply fill the narrow flag and attach it to your awning for a stable and secure setup. Many uses possible: ideal for luxury, rhino, canopy and beach roofs.