Description: Heavy-duty sandbag adopts 210D oxford fabric, making it durable and effectively waterproof. Durable double line sewing ensures our sand bags not easy to break, preventing water and sand penetrate from seams. (Without Sand) STABLE&STURDY: Industrial-grade weight bags are equipped with two fastening belts, which are sewed on weight bags,making it attaches to up canopy tent frame easily and firmly. Besides, two small bags on two sides are designed to keep tent frame in balance. EASY TO USE AND STORE: Heavy-duty saddlebags are quick and easy to use. Simply fill bags with sand into the large top opening and then simply attach two straps to the canopy frames. very easy to carry and store. MULTI-USE: And it can be filled with anything, such as sand, gravel rocks, even nuts and bolts, etc. Its premium and professional quality makes it can be used indoor and outdoor, often on any Canopy, Tent or Gazebo,Patio,Sports and Backyard. Stabilize any Instant leg Canopy, Up tent or gazebo structures, camping sun shlters, sports umbrella with a set of durable universal weight bags. Specification: Material: 210D Oxford Fabric Size: 40x34cm/15.75x13.39inch Package Includes: 2 Pieces Weight Bag (Black+Green) Note: Please allow slightly difference due to manual measurement. Color may be slightly different since different monitor. Thanks!