DescriptionHeavy Duty Sandbags designed to keep inflatables from moving when setup is requested on a hard surface i.e. concrete, asphalt, indoors or at a place where stakes can not be used. Price is for the recommended number of bags required for (1) inflatable unit. Example: combos need 10 sand bags, obstacle courses 12 bags, joust arena 8 bags, etc. FYI: 1 sandbag weighs 75lbs. 150lbs is required on each anchor point of the inflatable to meet the Manufacturers safety requirement, therefore (2) sandbags will be on each anchoring point needed to secure the unit from moving.60