Outdoor Patio Umbrella Base Stand Heavy Weight Bag Wind-Proof Fixing SandbagsENSURE EXTRA SAFETY. These umbrella base weight sandbags are truly robust and versatile. Use them as outdoor furniture weights and to keep drying racks trampolines stable: or as door stoppers! UP TO 49 LB. You can fill each umbrella sandbag with sand, gravel, or stones (not water!) to make a patio umbrella weight of 49 lb (22 kg) and keep a cantilever umbrella base secure and in place. FOR ANY HARSH WEATHER. These umbrella weights for outside are made