Nylon construction with commercial stitching. Each bag holds up to 40 lbs. of sand. Material is weather-resistant. Weight bags eliminate the need for stakes. The E-Z UP Weight Bag is double the capacity of standard bags holding up to 40 pounds of sand per bag. The weight bags easily wrap around the leg of the canopy with quick-release pins for added stability securing the portable shelter in windy conditions and protecting your investment. The durable nylon fabric is weather-resistant and features reinforced commercial stitching with E-Z quick attachment straps. Their sleek compact cylindrical design includes a convenient carry handle. These weight bags are fire-retardant treated to meet CPAI-84 requirements. Forget driving stakes into the ground; just bring weight bags! These bags are designed only for canopies with the EU item code. Choose between four or six weight bags International E-Z UP Inc. invented the portable quickly erectable shelter in 1983 and created a successful business with quality products and a reputation for fine customer service. For nearly two decades E-Z UP has been the industry leader in portable shelters with innovative designs that stand up to the test of time. Trust your special event to E-Z UP.