Durable Material: High quality fabrics (900D Oxford with PVC coating) strong and sturdy, won't crack or tear, can't be corroded, waterproof sunscreen, heat resistant, cold resistant, frost resistant and easy to clean. Specially designed for: 2 detachable parts of ergonomics and the base of the weights are durable, easy to set up and carry, can be folded and stored when not in use. Large load prevent them from tipping over. Each piece of this umbrella sandbag can hold up to 50 kg of sand when fully filled, preventing your umbrella from tipping over and your family from getting hurt even when it's very windy and breezy. Easy to Create: The umbrella weight is easy to fill this sandbag, the opening is wide and allows you to quickly fill the bag, put the bag around a composite pole Please note: "sand not included".