-Designed with a large reservoir that can be filled with sand or water to add stability-Comes with a built-in handle on the bottom only weiSBK 4.5 lbs easy carrying-Equipped with protective pads on the bottom keeping the umbrella base stable-Made of high-strength HDPE material waterproof aging-resistant durable enough-Equipped with 2 plastic inserts suitable for most umbrella poles 1.5"/1.9" -Equipped with a hand-turn tightening knob for securing the umbrella on the base-Suitable for various residential and commercial uses: patio garden coffee shop etc Color:Black Material:HDPE, Metal Overall Dimensions:18" x 12" (Dia. x H) Fill Capacity of the Sand:55 lbs Fill Capacity of the Water:4 Gal Fill Capacity of the Water and Sand:66 lbs Suitable Umbrella Pole Diameter:1.5"/1.9" Suitable Umbrella Size:9-10 ft Net Weight:4.5 lbs