-Designed with a large reservoir that can be filled with sand or water to add stability-Made of high-strength HDPE material waterproof aging-resistant durable enough-The pole can be stored on the bottom groove saving space easy to transport-Easy to set up and enjoy the cool shade (note: the umbrella is not included)-The built-in handle brings convenience for transportation only weiSBK 3.5 lbs-Suitable for various occasions: patio poolside beach terrace garden deck etc-With its elegance and classic black appearance suitable for different decors Color:Black Material:HDPE Overall Dimensions:16.5" x 16.5" x 11.5" (L x W x H) Fill Capacity of the Sand:51 lbs Fill Capacity of the Water:4.9 Gal Fill Capacity of the Water & Sand:66 lbs Suitable Umbrella Pole Diameter:1.5" Net Weight:4 lbs