Our sand bag leg weights (sold in packs of 4) are a perfect and economical solution for weighing down instant shelters, pop up gazebos and market stalls. Each sand bag consists of 2 zipped pockets which are designed to be filled with sand, stone or shingle (not supplied). When full they will amount to approximately 10kg of additional ballast. The bags wrap around and fix using Velcro to the legs of your instant shelter or market stall. We recommend a minimum of 4 sand bags per structure (typically one for each leg).