Ensure additional security. These umbrella bottom weight sandbags are very sturdy and versatile. Use them as outdoor furniture weights to maintain stability on drying racks/trampolines, or as door stops!Up to 49 pounds, you can fill each umbrella sandbag with sand, gravel, or stone (not water!) to make the weight of the terrace umbrella 49 pounds (22 kilograms), and ensure that the cantilevered umbrella base is securely fixed.Suitable for any adverse weather conditions. This outdoor umbrella is made of tough, waterproof, UV resistant, and dust-proof materials, and can withstand extreme temperatures. It is suitable for sandbags that can be supported year-round.Used for many years. Each beach umbrella sandbag is made of high-density 600D reinforced fabric, which will not tear or stretch. There is no plastic layer, so there is no molding or damping inside the umbrella bag.Intelligent and humanized design. The weight of the arched umbrella increases the contact area. Carry umbrellas with sturdy straps on each sandbag. Easy filling of umbrella sandbags through large openings at both ends, using ultra dense and clutter free hook and loop fasteners.