These are weights for tents. They're convenient because you can fill them with water. I was planning to set up a booth at a flea market, but I never used them and they've been sitting in storage. *I'm selling two.* ■ Brand CAPTAIN STAG ■ Condition New, unused, only opened once. ■ Description These water weights are convenient for setting up tarps and shades on asphalt or other surfaces where pegs can't be used. It comes with two 5L water tanks, and when filled with water and set in the dedicated body during setup, they become 10kg weights. ● Size...Approx. Width 30 x Depth 18 x Height 14 (cm)