[Drop-Tested Sandbags] - Our canopy sandbags are the only products on the market that have passed a high-impact drop test, withstanding the force of a 30-pound weight dropped from a height of 3 meters. This proves our commiment to superior quality. [ Materials] - We use high-density Oxford Fabric with PVC coating to prevent sand leakage and weathering. Additionally, we choose 3-ply reinforced threads from well-known to provide superior stitching strength, ensuring the sand bags' durability. [Capacity and Dimensions] - The capacity can hold 30 pounds of dry sand, and it can also be filled with wet sand, soil, small gravel, etc. Four fully filled bags can help a 10x10 feet tent withstand strong winds exceeding 40 kilometers per hour. The dimensions of our product are 18.5 inches in height with a bottom circular diameter of 6 inches. The side nylon sticker is suitable for canopy tent poles with diameters ranging from 20mm to 50mm. [NOTE] - SAND NOT INCLUDED. Colour:Black Material:Oxford cloth Package Contents: 4 * Top Sand Bags for Canopy Legs 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.