made of high-quality durable Oxford cloth fabric, which is waterproof, tear-resistant, light-proof and -proof.the weight bag can be filled with sand, rocks and any solid and heavy materials nearby.sandbag weight bag can be used to tents, , camping tents, pavilions, etc. It can and perfectly 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 , camping awning, patio umbrella.It is convenient for carrying and hanging on the tent.Applicable : Spring / Summer / Autumn / WinterColour:blackMaterial:Oxford clothSize:L: about 40 x 50CMPackage Contents:4 x sandbagsOnly 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.