Secure your outdoor umbrella or canopy with this 18-inch round weight bag, designed to keep your setup stable in windy conditions. Made from weather-resistant 900D polyester with a waterproof PU coating and UV protection, it withstands sun, rain, and snow without fading or cracking. The split-ring opening fits around most umbrella poles, while the large top flap makes filling with sand or gravel quick and mess-free. A durable PVC quick-release buckle and reinforced triple-stitched sides ensure the bag stays firmly closed during use. Built-in carry handles allow easy repositioning, and it folds flat for compact storage when not in use.