When not in use, handles help make them portable, and they stack for storage.
Unscrew the nozzles to put water or sand inside for up to 175 lbs. That's where our weights come in; coming in a pack of four to keep your cantilever planted, our weights are heavy when you need it and light when you don't. Outsunny 4PCs 175lb Square Shaped Water Or Sand Filled Umbrella Base, Cantilever Patio Market Base, for Offset Umbrella, Brown Made of thick, waterproof plastic they were designed with outdoor in mind.