Ohuhu Canopy Weight Bags for Pop up Canopy Tent, Sand Bags for Instant Outdoor Sun Shelter Canopy Legs, 4-Pack (Bags Only, Sand Not Included) DUAL-ZIPPER COMPARTMENTS: Each bag comes with two zippered sections for sand, gravel or any preferred contents 30 LB WEIGHT: Each pack can hold up to a maximum of 30 lbs (13.6kg) of weight in sand, rock, dirt and other contents EXTREME CONDITIONS USE: Each bag is equipped with a hook and a nail to withstand high wind, and other natural weather elements TWO-CYLINDER BAG: Each bag seam is double-stitched for durability, and comes with one Velcro strap for hold and ease of use for tying down HIGH QUALITY MATERIAL: Created with 600D oxford fabric for high quality and built to last. ***NOTE*** Filler is not included