4 Pcs 238 Lbs Water Sand Filled Square Patio Umbrella Base for Cantilever Offset UmbrellaIf you are still looking for a sturdy and durable base to keep your umbrella more stable. This is the high strength base weight that holds the umbrella in place perfectly. Constructed of durable PE material and excellent blow molding technology, it has a very long service life. And the base weight can reach 238 lbs after filling with wet sand to give you stable support. It is worth mentioning that each plate has a large filling spout, which can