weight bag can be used to build tents, , camping tents, pavilions, etc. It can and perfectly improve the stability of the structure and prevent it from shaking and tipping in windy weather. universal stable instant canopy, pop-up canopy, commercial canopy, beach canopy, small canopy and even pavilion, camping awning, patio umbrella. just fill them up with water, tie them up to canopy posts, and they weight your canopy down quietly regardless of wind blowing The canopy weights feature convenient wide handle and check valve spout to release the water pressure under cap for a leakproof system Colour:Blue Material:Laminated PVC sheet Size:about 20 x 30cm Package Contents: 4 x sandbags Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.