Eurmax Universal Water Sand Weight Feet for Pop up Canopy Party Tent, Pack of 2 Adaptable to: Most instant canopy and pop-up structures in the market include Eurmax Instant Canopy, Caravan Instant Canopies, Impact Instant Canopies, E-Z UP Instant Shelters, Quick Shade, Costco, Sam's Club etc. It can be filled with water,sand, rock, soil etc. Each bottle weight is about 31.0 LBS if filled with sand fully. Each bottle weight is about 22.0 LBS if filled with water. Include 6 weight Weight Feets. Used to weigh down your canopy tent legs for more stability