Specification: Color: Black Material: HDPE, Metal Dimensions: 21.5" L x 21.5" W x 15" H Base Size (without pole holder): 21.5" x 21.5" x 8" Water Fill Capacity: 100 lbs Sand Fill Capacity: 143 lbs Mixed Fill Capacity: 154 lbs Compatible Umbrella Size: 6–10 ft market umbrellas Compatible Pole Diameter: 1.5 in & 1.9 in Net Weight: 12 lbs Assembly Required: Yes Description: Support outdoor shade setups with this fillable patio umbrella base designed for patios, decks, poolside areas, gardens, and backyard seating spaces. Compatible with most 6–10 ft market umbrellas, it features a refillable reservoir that can be filled with up to 100 lbs of water, 143 lbs of sand, or up to 154 lbs of mixed material for added placement support. A wide fill opening helps make refilling and emptying quick and simple. Four smooth-rolling wheels allow easy movement across outdoor surfaces, while two locking wheels help keep the base positioned in place once adjusted. Two pole adapters support umbrella poles measuring 1.5 inches and 1.9 inches in diameter, and adjustable knobs with an internal stabilizer help maintain a secure fit. Constructed from HDPE with metal components, it is designed for regular outdoor use and includes a cut-out handle and rear storage slot for easier handling and compact storage. Note: Actual product color may slightly vary from the images shown due to lighting conditions during photography and individual monitor or device display settings.