Specifications:Color: BlackMaterial: HDPEProduct Dimensions: 32" x 32" x 4"Each Plat Size: 16" x 16" x 4"Stackable Height: 16"Net Weight: 14 lbsPackage Includes: 1 x 4-Piece Umbrella BaseDescription:Keep your offset patio umbrella supported with this 4-piece fillable umbrella base designed to fit compatible crossbar umbrella stands. The interlocking plates fit securely over the crossbars to help reduce movement while providing a simple tool-free setup for patios, decks, gardens, and poolside seating areas. Each plate features an extra-wide side filling opening with a twist cap, making it easy to fill with water, sand, or a combination of both. The base holds up to 188 lbs when filled with sand and water, providing added weight for compatible offset umbrellas. When it's time to store the base, simply drain the contents and stack the plates into a compact unit. The lightweight empty plates include integrated grooved handles for convenient carrying and repositioning. A wood-look surface adds a classic touch that complements a variety of outdoor furniture styles.