Trademark Innovations Saddlebag Style Sand Weight Bag Anchoring Patio Umbrellas (Single Unit) SINGLE UNIT, ONE SANDBAG. Made of heavy duty 600D Oxford Holds between 44 and 55lbs. Of sand, gravel or whatever material you want to add weight Durable zipper construction Saddlebag style so you can drape the bag over the umbrella cross base By Trademark Innovations