Features: 1. counterweight bag with umbrella base, square design with center hole, which helps to maintain the stability of patio umbrella. 2. Durable material, made of high quality tear-resistant oxford cloth, strong, no cracking and tearing, no corroding, waterproof, sunproof, heat-resistant, frost-resistant and cold-resistant, convenient handle, hand wash. 3. Loosen design, specially designed buckle opening, easy to fill. NOTE: Fill the bag with as much sand as possible to make sure it is tall and heavy enough. 4. All fit umbrellas, lights or banners 3 to 3.5 inches in diameter, for all umbrella poles, including slant and cantilever umbrellas. 5. User-friendly appearance, simple, convenient, durable and exquisite, just add your own sand. Specification: Item type: umbrella stand Material: 900D Oxford cloth Quantity: 1PCS Product color: black Approximate weight. 400g Size: Approx. 45.7x45.7x45.7x15.2cm / 18x18x6 inches Package List: 1 x Base (empty sand bag).