【Premium 600D Oxford Fabric】Crafted from high-density 600D Oxford cloth, these sandbags offer reliable tear resistance and waterproof protection. The sturdy material withstands regular outdoor use while maintaining its structural integrity. 【Substantial Weight Capacity】Each sandbag holds up to 49 pounds (22kg) when filled with sand, gravel, or stones, providing exceptional stability for cantilever umbrellas and patio furniture. The substantial weight prevents tipping in windy conditions. 【Weather-Resistant Performance】Designed to endure various outdoor elements, these sandbags resist water, UV rays, and temperature extremes. The weatherproof construction ensures year-round performance in different climates. 【User-Friendly Design】Featuring an arched shape for enhanced stability and horizontal carrying straps for easy transport. The wide openings with secure hook-and-loop closures allow for mess-free filling and emptying. 【Multi-Purpose Utility】Beyond umbrella bases, these versatile sandbags serve as weights for outdoor furniture, trampolines, drying racks, or door stops. The practical design adapts to various stabilization needs around your home and garden.