Large signs such as tarpaulin, are lightweight and have a large area, so weigh is essential for wind protection.This product is suitable for indoor and outdoor use.When full, it will weigh up to 44.1 lbs (20 kg). Donut shape with 9cm diameter holeConvenient for when you want to add weight to your rolling stand. Size: 15.7 x 15.7 x 5.9 inches (40 x 40 x 15 cm); Weight: Maximum weight 44.1 lbs (20 kg) when fully