High quality material: Made of sturdy 600D Oxford fabric, well structured. PVC waterproof polyester interior coating, stronger than most weight bags. Special Design: Each bag comes with two zippered sections for sand, gravel or other contents around and also comes with a Velcro strap to hold the feet, which ensures the sand weight bags stay securely attached to your instant feet. Wide Usage: Can be used for instant canopy, folding gazebo, shade tent, a sales booth, a parking shed, etc. Can be used anywhere: markets, camping, picnics, festivals, celebrations, sporting events, or even at the beach. Easy to use: can be filled with easy-to-reach materials, such as sand, gravel, dirt, stones or any other material available around you. With a sturdy nylon handle on top for easy carrying. Heavy Duty Capacity: The 4 pack awning weight bags are capable of holding up to 100 pounds in total. Each bag can hold approximately 30-35 lbs when fully filled with sand or any available material.