Adjustable: you will receive the weight of one set of beach umbrella sand base; The middle anchor hook collar is adjustable, and you can adjust it according to the size of the beach umbrella pole, which is suitable for most beach umbrellas. 4-sided design: Our sun umbrella base weight bag is square, with 4 holes matched with the sun umbrella and 4 corner hooks, which are larger in size and can hold more sand, making the beach sun umbrella more stable. Simple to use: put the beach umbrella pole through the reserved big hole, adjust the anchor hook collar in place, and fill it with sand to increase the weight. When not in use, the sand can be poured out and folded to save space. High-quality material: our beach umbrella sandbags are made of 600D Oxford cloth, which is waterproof and firm, not easy to be damaged or worn, and can be used for a long time. Application: it is mainly used for fixing beach umbrellas, suitable for camping, picnics, beaches, sports events and other occasions. Colour:Black Material:Oxford Cloth Package Contents: 1x Fillable Sandbags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.