BUYBEYBUY Free Standing Patio Umbrella Base Durable High-Density Water Filled Umbrella Holder Outdoor Living Heavy Duty Umbrella Patio Base Stand, Black…Stability base for large umbrellas is just 6 lbs. in weight, when filled with water, it weighs up to 47 lbs. to secure patio umbrellas against light winds Lightweight design for easy handling (base is approximately 6 lbs. when Empty). no table required for this heavy duty patio umbrella base Freestanding design works with all Stromberg Brand patio umbrellas and many other patio umbrellas that have central poles that have different diameters I. e. 38mm