Windblown tents， canopies and umbrellas are the number one cause of injuries and insurance claims at outdoor events where canopies are used. With these four empty shells， you can customize the amount of weight you need by mix and matching with other canopy weights. Dimensions - 9" L x 9" W x 9.5" H Secure tents， canopies and umbrellas at outdoor events with these interlocking weights Made in the US from recycled material， filled with natural， river-washed screened silica sand Includes four 5 lbs weights for a total of 20 lbs of weight does not include carry strap No-pinch design makes for easy， safe installation and removal of weights Interlocking weights securely fit all canopy poles up to 1.25" wide， does not include strap Crafted from durable， recyclable high-density polyethylene This set does not include a carry strap Limited 90 days manufacturer warranty Assembly Required Polyethylene Wipe Clean Made in USA Furniture Mattress Delivery， Returns Services