Function:1. Excellent material, durable, convenient to carry, large capacity, good leakproof, counter weight bag(4 counter weight bags per set), suitable for all tents(suitable for 15mm to 50mm leg length) and camping sunshade,sports umbrella, trampoline. 2. The counterweight bag can hold 20-25 pounds of weight on sand, rocks and soil, very suitable for all surfaces. Made of high quality oxford fabric which is durable and wear-resistant. 3.Easy to install and remove, easy to carry outside Common weight bags can hold sand, rocks, snow or any material nearby. 4.Seals with hook strap, convenient and quick sealing of weight bags, very suitable for shade, sand beach awning and garden patio. 5. Use a set of durable universal counterweight bags to stabilize your instant leg awning, pop-up tent or pavilion construction, camping awning, sports parasol. Specifications: Condition: 100% Brand New Item Type: Tent Fixing Sand Bag Material: Oxford Cloth Color: Black Quantity: 4 Pcs Weight: Approx. 50g Size: Approx. 40x34x1cm/15.7x13.4x0.4inch Package List: 4 xTent Fixed Sandbag Note: Sand not included