1. The umbrella sandbag base is made of high quality Oxford cloth, brand new, strong and durable, anti-wear. It is a very simple way to support the umbrella base. Fits umbrella poles up to 3.0 inches in diameter. Our round weight bag design complements the shape of your round umbrella stand. 2. The Umbrella Sandbag Base keeps your umbrella stable. This will ensure that your umbrella is stable and secure against winds, storms and other elements of nature. It can be used at any time for the umbrella on the balcony, beach, pasture, garden, hilltop, lake. The sun in the sea will bring romance to lovers, bring happiness to the family. 3. Only need a few minutes of sandbag can be filled. The side opening functions allow you to easily attach the base to any umbrella stand. No matter the wind, rain or sun, our sandbags will not be affected by any. This product is suitable for parasols, tents, outdoor parties, pavilion tents. 4. Our umbrella sandbag base is portable, if you want to move, you can just pour the sand, fold it and store it. Foldable and reusable for easy storage and transport. Overall Dimensions (Diameter x H): 46 x 15 cm (18" x 6"); Center hole diameter: 8 cm (3"). 5. There might be a little color difference due to the display, camera or other factors, please refer to the physical item. Made of high quality Oxford cloth, durable and practical. The overall size of Demension is 18 x 6 inches, the center hole diameter is 3 inches. The sand shovel is not included in the package. Suitable for balcony, beaches, grasslands, garden, hilltop, etc. Fill the base weight bag of this parasol with sand, wrap it around any umbrella pole and don't worry when it's windy. Specification: Size: 46cm in diameter, 15cm in height (Middle hole diameter: 8cm). Color: Black. Material: 600D Oxford Cloth. Occasion: Balcony, Beach, Grass, Garden, Hilltop, Lake. Defense: Wind, Rain, Storm, Sun. Weatherproof. Package Includes: 1 x Umbrella Base Weight Bag. Note: There are some little color and size errors due to the monitor and measurement, we really need your understanding.