Dim: 9 1/2" x H 4" x W 2 lbs. Gross weight (full of sand) 8 lbs. Product Info Made of very strong plastic. Fillable with sand or water. The essential accessory for holding our 1" poles upright. Sturdy base is shock and weatherproof. It can be filled with sand ballast via a hole in the base. ADDITIONAL SHIPPING CHARGES MAY APPLY.